Answer: CARBON DATING
Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that. Carbon dating is used by archeologists to date trees, plants, and animal remains; as well as human artifacts made from wood and leather; because these items are generally younger than 50,000 years.
What benefits do plants with a smooth stem have? Does the stem type protect a plant?
Smooth stem plants like guava, eucalyptus etc do have a smooth layer of bark over its stem that comes out as a skin when they shed their barks. Whereas most of the other plants like mango, banyan etc do have a rough corrugated layer of bark over their stem.
The smooth stem doesn’t let water to accumulate in the bark which can led to infections to the tree. It also doesn’t allow any seed to settle on bark that can led to growth of parasites. Thereby this smooth bark saves the trees from some of the probable harm to the tree.
Final answer:
Plants with smooth stems benefit from less resistance to water flow and reduced pest habitation. Modified stems like rhizomes, stolons, runners, corms, tubers, and bulbs aid in survival and reproduction, storing food and facilitating spread. Stem type contributes to a plant's adaptability and protection.
Explanation:
Benefits of Plants with Smooth Stems
Plants with smooth stems often have advantages in environments where there is fast-flowing water or frequent rainfall. A smooth surface can reduce resistance and allows water to flow off easily, thereby reducing damage from strong currents or heavy rain. Furthermore, a smooth stem can be less habitable for pests and parasites, which often find it difficult to grip onto the slick surface. From an evolutionary perspective, plants have developed different types of stems, including modified stems, to adapt to their environments and enhance their survival and reproduction.
Modified Stems
Rhizomes, stolons, and runners provide an advantage by allowing the plant to spread horizontally and produce new offspring at a distance from the parent, good for colonization. On the other hand, corms, tubers, and bulbs store food, which can be crucial for survival during periods of dormancy or when conditions are not conducive to growth. These modified structures often contain nodes and axillary buds, indicating that they are indeed modified stems rather than roots.
In summary, the type of stem can indeed protect a plant by aiding in its adaptation and survivability. Whether it's through physical characteristics like a smooth surface or modifications for storage and reproduction, the stem is a vital component of a plant's success.
Which of the following illustrates 2 resistors in a series circuit
Answer:
Option B is the correct.
Explanation:
In a series circuit, components are connected end-to-end in a line to form a single path through which current can flow.
In the diagram, option B and D, both are series circuits but circuit B has two resistors while circuit D has only one.
Circuit A and C are parallel circuits because their components are connected across each other's leads. They have many paths for current flow with one voltage across all components.
So, circuits A, C, and D are incorrect.
Answer:
It's B
Explanation:
I'm pretty sure and Highly sure it's B
In a cell that is undergoing mitosis, what first happens to the chromosomes after the nuclear envelope breaks down?
A. They replicate to make a new copy of DNA .
B. They line up at the equator of the cell.
C. They pair up as homologous chromosomes.
D. They are moved to either pole of the cell.
Answer:
B
Explanation:
Answer:
B. They line up at the equator of the cell.
Explain the law of conservation of energy. Give a specific example using kinetic and potential energy that shows how energy is conserved.
Energy can neither be created nor destroyed. It is transformed from one to another form.
The example of potential energy raised ball over the round and example for kinetic energy is water is used for moving the turbine to produce electricity.
Explanation:
This process happens because of conservation of energy. According to the rule of the conservation of energy, energy can’t be created nor destroyed. It is simply converted from one to another form. It simply means this system always need same amount of energy.
Due to motion of object or particle an energy is formed is called kinetic energy and due to relative position of energy an energy is formed is called potential energy.
What is "change" when we are talking about natural and physical systems?
A.
Repeated processes that are used in a variety of ways
B.
Information that has been proven to be true
C.
A process for using knowledge and skills to acquire new knowledge
D.
A variable or alteration to one part that affects an entire system
Answer:
D
Explanation:
A variable or alteration to one part that affects an entire system
Where do marine scientists get the ethical standards for their profession and what kind of values do they include?
Answer:
Explanation:
The ethical standard was accepted by the Society in the 2013 mid-year ballot. This Code states 17 guiding principles aimed at assisting the Society.
Some of the ethical issues include the potential for data fabrication/ falsification,
conflicts of interest, human subjects violations, working with scientific uncertainty and values conflicts in marine conservation.
Final answer:
Marine scientists acquire their ethical standards from scientific ethics, philosophical discussions, religious and environmental ethics, and community norms. These standards emphasize the minimization of harm to organisms and ecosystems, as well as unbiased research. Ethical reasoning features in education and policy to guide practitioners in morally complex situations.
Explanation:
Origins of Ethical Standards in Marine Science
Marine scientists derive their ethical standards from a variety of sources including scientific ethics, philosophical discourse, and environmental considerations. These standards aim to protect humans, animals, and ecosystems from undue harm while promoting research that is free from bias. Principles of ethics such as compassion, humility, respect, coexistence, and sustainability guide interactions with marine life, with an increasing focus on moral considerations as we learn more about marine cognition and consciousness.
Ethical dilemmas, intrinsic and extrinsic values, and the application of ethical reasoning are core components within the marine science field. This includes the management of fisheries and the conservation of rare and endangered species, where ethical assumptions can significantly influence policy and practice. Additionally, religious and environmental ethics contribute to shaping the values and norms that marine scientists may hold, especially when pondering grand questions about humanity's relationship with the ocean and its inhabitants.
To foster ethical conduct, the incorporation of ethical reasoning is advocated in curricula, major meetings, and agency operations. Emotion plays a critical role in shaping moral judgments, which is why the engagement of both hearts and minds is encouraged in ethical deliberations. This holistic approach helps marine scientists navigate complex ethical landscapes in their work.
When rocks are exposed to heat, they _______, which can contribute to thermal stress.
Answer:
Expands
Explanation:
Rocks being exposed to heat tends to expand. This expansion creates thermal stress in the area surrounding that rock. When this expansion takes place under the earth's surface, this expansion makes the tectonic plates to move which further becomes the cause of earthquakes. Hence, the answer is 'expands'.
Cancer can be caused by excessive cell growth and divisick. Two genes that regulate the growth and division of a cell are called
oncogenes and tumor suppressor genes. Oncogenes direct cells to grow and divide, whereas tumor suppressor genes limit cell
growth and division.
Certain viruses have been associated with an increased risk for cancer. For example, the hepatitis B and C viruses are associated
with liver cancer, the Epstein-Barr virus is associated with lymphoma, and the human papilloma viruses are associated with cervical
cancer.
Viruses can cause mutations in their host cells. Which mutation described below would be most likely to cause cancer in a host
organism?
The virus mutation that can cause cancer in a host organism is when the mutation occurs in the genome.
Explanation:
When cells that does not need to replicate start replicating proliferously then that particular cells become carcinogenic. A virus can cause considerable mutation in the genome of the host cells. The virus acts in the host cell alter their DNA and causes oncogenes.
Mutations in genes causes changes in the cell cycle. This creates an imbalance in the cell production where some cells undergo continuous cell division. As the cancerous cells undergoes vigorous proliferation they become malignant tumor.
a mutation in a host cell that turns oncognenes on and tumor supressor genes off
Which of the following processes is necessary for cellular reproduction and the repair of tissues? A catabolism B excretion C meiosis D mitosis
Answer: D
Explanation: For cellular reproduction, you'll need mitosis, since it is the moment in the cell cycle where chromosomes are separated into two new nuclei.
Answer:
D
Explanation:
Compare and contrast metamorphic, igneous, and sedimentary rocks
Answer:
Sedimentary rocks are formed from the accumulation of minerals due to erosion.
Metamorphic rocks are rocks formed under extreme heat and pressure.
Igneous rock is a type of rock formed when magma cools.
All three are rocks formed under different circumstances.
7. Darrin identifies a deposit of talus bear the side of a landform. He determines that the deposit was formed by SC.6.E.6.1
A creep.
B a mudslide.
C a rockfall.
D slump.
Answer:
Option C, Rockfall
Explanation:
Talus is basically formed along the side of a slope at it base by the deposition of pile of rocks and sediments which have eroded from the slope and have collected at the base. In a rock fall, the rock fragments detaching from a vertical cliff slides/topple down to the base of the terrestrial structure there by forming talus.
Hence, option C is correct
Which of the following accurately describes what makes a material a good conductor?
A. It must resist neutron flow.
B. It must readily accept electron flow.
C. It must readily accept neutron flow.
D. It must resist electron flow.
Answer: Option B
Explanation:
The electrical current is defined as the flow of electrons inside a material.
As more electrons can flow in a given time (for a fixed area, suppose the transversal area of a wire), more electricity is being generated.
Some materials have some resistance to the flow of electrons because they have "obstacles" that impede the free flow of the electrons, and when the electrons hit those obstacles, energy is liberated, this is why some materials heat up as a current flows throw them.
Now, you also may know that as the temperature of an object increases, also the kinetic energy of the particles inside of it, so the particles of the material will be moving a lot more, and because of this, the electrons will find more resistance to the motion.
The correct answer here is B; a good conductor must readly accept the electron flow.
Answer:
Readily accept electron flow
Explanation:
The answer is b. Readily accept electron flow. It is because electron flow is the reason for generation of electricity i.e, current is produced in the direction opposite to the electron flow. In order to behave as a good conductor, it must allow free flow of electrons through it. Hope it helps:)))
how do living systems control the movement of materials into and out of cells?
Answer:
by a process called diffusion osmosis and active transport.
Explanation:
diffusion : movement of particles from a higher concentration to a lower concentration down to ge concentration gradient
osmosis: movement of water from higher water potential to a lower water potential through a partially permiable memberane
active transport: movement of ions from a lower concentration to a higher concentration against concentration gradient using energy from respiration
In regards to the Amoeba Sisters' video about blood type, if a man with Type A blood and a woman with Type O blood have a child that needs a blood transfusion, what blood type would not be able to donate to the baby?
Answer:
Explanation:
Donors with blood type A can donate to recipients with blood types A and AB. Donors with blood type O. can donate to recipients with blood types A, B, AB and O (O is the universal donor to all blood
A child born to a man with Type A blood and a woman with Type O blood cannot receive blood from Type B or Type AB donors.
When determining which blood types can donate to a baby born to a man with Type A blood and a woman with Type O blood, we need to understand the compatibility rules of blood transfusion.
When a man with Type A blood and a woman with Type O blood have a child, the child can have either Type A (AO genotype) or Type O (OO genotype) blood. In the ABO blood group system, individuals with Type A blood can receive blood from Type A and Type O donors, while individuals with Type O blood can only receive blood from Type O donors.
If the child needs a blood transfusion, they would not be able to receive blood from Type B or Type AB donors. This is because Type B blood contains B antigens that would trigger an immune response in the child with Type A or Type O blood. Similarly, Type AB blood contains both A and B antigens, making it incompatible with the child's Type A or Type O blood.
Therefore, when considering blood donation for the child of a man with Type A blood and a woman with Type O blood, it is important to ensure compatibility based on the ABO blood group system to prevent adverse immune reactions during the transfusion.
Which data help hydrologists predict floods?
Answer:
Hydrologists require various data like the amount of rainfall, amount of vegetation present and so on. Different types of data used by the hydrologists to predict floods. Two most common type of information are related to impermeable land and snowpack.
Explanation:
The following are the data that is required by hydrologists to predict floods in a particular area:
Impermeable land.Snowpack. Amount of rainfall in a particular area.Changes that may occur at the river water level due to high rainfall.Extent, duration, and intensity of storms that produce moisture.Information about the river drainage system, the temperature of the ground, vegetation cover in a given area, and impermeable land area to predict the severity of the floods.Are all plant structure and function the same? Explain
The plant cell is the basic structural and functional unit for all living organisms. .. So basically, the answer is yes. Plant cell structure is very similar to that of the animal cell, while the structures within each group the same throughout organisms. The two types of cells contain many of the same organelles. These organelles carry out the same functions in both types of cells.
Even though there are such a variety of plants, there are a few things that all plants have in common. At the cellular level, all plants are eukaryotic, meaning they have a nucleus and other organelles. One type of organelle in particular, chloroplasts, are found in all plants.
What do disaccharides, such as sucrose, and
polysaccharides, such as starch, have in common?
A They are lipids made of fatty acids.
B They are proteins made of amino acids.
C They are nucleic acids made of nucleotides.
D They are carbohydrates made of simple sugars.
Explanation:
D They are carbohydrates made of simple sugars.
Both disaccharides and polysaccharides belong to the category of carbohydrates, as they are both made up of simple sugars or monosaccharides. Two monosaccharides combine to form a disaccharide, while many monosaccharides join together to make a polysaccharide. Hence, both sucrose (a disaccharide) and starch (a polysaccharide) consist of simple sugars.
Explanation:Disaccharides like sucrose and polysaccharides like starch are both classified as carbohydrates. These compounds are constructed from smaller, simpler units known as simple sugars, or monosaccharides. Disaccharides are formed when two monosaccharides combine together, whereas polysaccharides are made of a larger number of monosaccharides. Hence the correct answer to your question is D - They are carbohydrates made of simple sugars.
Examples of monosaccharides include glucose and fructose, and these can combine in different ways to form disaccharides and polysaccharides. Sucrose, for example, is made of one glucose and one fructose molecule. Starch, on the other hand, is a polysaccharide made primarily of glucose units.
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What is a method of making many copies of DNA
Answer:
The methods by which DNA molecules multiply is known as REPLICATION
Explanation:
DNA REPLICATION.-
In all living organism DNA replication occurs. IN replication DNA replicates in this way making its replica or we can say its copy.
During replication, both the strands of DNA are separated first. Then each DNA strand function as the template and makes its own copy to make the full DNA molecule. This is the SEMICONSERVATIVE mode of replication. In which each DNA molecule has one parent strand and one newly synthesized strand.
The replication start sight is ORIGIN OF REPLICTION( in E.coli ori c). At this location Helicase enzymes help in opening of the DNA.
The enzyme which has very unique function of adding nucleotide on the DNA strand and synthesizing DNA is DNApolymerase.
DNA replication occurs in 3' to 5' direction.
Answer:
polymerase chain reaction
Explanation:
HOPES THIS HELPS MWAAAW kiss
How does the process of natural selection work?
Answer:
If I am correct it is when the weaker individuals or mutated individuals are killed of by other predators or by nature. Because they cannot survive this is natural selection because they are killed of by nature. Then if they are weak their species will go extinct, thus they are naturally selected to die and only the strong species remain.
Answer: The process by which organisms that are better suited to their environment than others produce more offspring. As a result of natural selection, the proportion of organisms in a species with characteristics that are given environment increases with each generation
Explanation: Hope this helps
Which nutrient is our main energy source.
Answer:
ptassium
Explanation:
Answer:carbohydrates
Explanation: I take it as this....fruits and vegetables are things we are told that we must eat and they all contain carbonhydrates
Which term describes the maximum number of individuals an ecosystem can
support over time for a given population?
A. Life span
B. Death rate
C. Immigration rate
D. Carrying capacity
Answer:
(D) Carrying capacity describes the maximum number of individuals an ecosystem can support over time for a given population
Explanation:
The population size which can be supported indefinitely upon those service and resources which is available in ecosystem. These factors affect carrying capacity.
(1) The quantity of resources which is available In ecosystem.
(2) Population size and
(3) The amount of resource which is consumed by each individual
In a habitat, carrying capacity is different for each species. The reason behind it is the requirement of their food, shelter is different. When there is a lack of availability of food, then the population present there will decrease eventually.
Which statements describe some ways that the student recorded data incorrectly on the lab report to the right?
A. The speed data should all be arranged in
increasing order.
B. No units are given for the speed of the water.
C. Millimeters are not the best unit to use for the
distance.
D. Wind speed should be in mph.
E. The student mixes units of length, using SI units for distance and customary units for depth.
The student recorded data incorrectly by omitting units for the speed of water and potentially mixing units for length and depth. Appropriate and consistent units must always accompany scientific measurements, and an understanding of both SI and customary units is necessary.
When recording data, it is essential that units are always included to avoid confusion and ensure precision in communicating the results. While there is no strict rule that speed data must be arranged in increasing order, it could help in some analyses. However, if the data does not include units for the speed of the water (statement B), then that is incorrect. The choice of millimeters as a unit for distance (statement C) depends on the desired precision and the context of the experiment; millimeters are a fine unit for short distances, but could be impractical for longer ones. Wind speed does not necessarily need to be in mph (statement D) as it depends on the regional or scientific standard; both m/s and km/h are also commonly used. Lastly, mixing SI units for distance with customary units for depth (statement E) can lead to confusion and should be avoided; consistency in the unit system is crucial unless there's a specific reason to convert between them. Furthermore, consistency is important when presenting data. It's crucial for students to understand both SI and customary units to effectively interpret and communicate scientific information, which includes being able to convert units when necessary. Therefore, the student must check their lab report to ensure that units are present, appropriate, and consistent throughout the document.
Ca you help me describe the exchange of carbon through carbon-containing compounds between an organism and the environment.
Answer:
In pics below.
Explanation:
Answer:
man that was super helpful
Explanation:
Why did the theory of light change overtime?
A.The theory was too old and needed to be updated
B.new scientists did not agree with the older theory
C.the scientific question changed, so the theory had to change
D.repeated experimentation introduced new discoveries
Answer:
it is two answers (A and d)
Explanation:
If we keep the same theory of light today we wouldn't be advanced as we are now so yes the old theory had to get updated or plain or replaced with a newer one, D is also correct because if you repeat something you will find out new things from the first time you tried it out.
Answer:
D.repeated experimentation introduced new discoveries
Explanation:
The theory of light began in antiquity with the Greek philosophers who believed that light was formed by tiny particles that spread in the ambience at high speed, today we know that this is not true, through the realization of innumerable experiments. This theory was believed for years, until through several experiments that took place through the session, it was allowed to make increasingly accurate discoveries about who were able to change this theory several times over time. In fact, through more controlled experiments, this change in light may change again.
Cell processes and transport
How would you greet these people in Latin?
Salvē.
Valē.
Salvētē.
Valētē.
Answer:
Salvētē. or Salvē.
Explanation:
Salvē means Good afternoon, and Salvētē means hello so the two would work. I hope this is helpful
Final answer:
In Latin, you would greet these people as follows: Salvē, Valē, Salvētē, Valētē
Explanation:
In Latin, you would greet these people as follows:
Salvē: This is a formal way to greet a single person. It can be translated as 'Hello' or 'Greetings'.Valē: This is a formal way to say goodbye to a single person. It can be translated as 'Goodbye' or 'Farewell'.Salvētē: This is a formal way to greet multiple people. It can be translated as 'Hello everyone' or 'Greetings to all'.Valētē: This is a formal way to say goodbye to multiple people. It can be translated as 'Goodbye everyone' or 'Farewell to all'.Los recursos naturales: son los elementos de la naturaleza que pueden ser utiles para el hombre, ya sea empleandolos directamente o transformandolos
Viento:
Maiz:
Selva:
Carbon mineral:
Metales:
Agua:
Petroleo:
Animales:
Energia solar:
Peces:
Bosque de pinos:
Suelo:
Ayuda por favor necesito las respuestas antes del lunes
Answer and Explanation:
Los recursos naturales son los elementos de la naturaleza que pueden ser utiles para el hombre, ya sea empleandolos directamente o transformandolos.
Viento: La energía eólica es un recurso abundante, renovable y limpio que ayuda a disminuir las emisiones de gases de efecto invernadero al reemplazar fuentes de energía a base de combustibles fósiles. Uso directo e indirecto.Maiz: El maiz es un cultivo sumamente valioso ya que es una fuente de alimento que aporta nutrientes fundamentales al organismo. Es consumido ampliamente en paises subdesarrollados. Uso directo como alimento.Selva: Este ecosistema es sumamente diverso en especies de flora y fauna. Por lo tanto, es un valioso recurso ya que a partir de las especies de plantas que habitan en la selva se extraen importantes compuestos que sirven para medicinas y productos (por ejemplo el latex). Uso directo e indirecto - transformacion de compuestos a materiales y medicinas.Carbon mineral: Este recurso proviene de la descomposicion de vegetales, hojas y madera y es utilizado como combustible. Uso indirecto - transformacion a combustible.Metales: Los metales son recursos no renovables que son extraidos naturalmente y utilizados por los humanos, especialmente para construccion. Entre los mas destacados estan el hierro, el cobre y el aluminio. Uso indirecto - transformacion por medio de refinamiento.Agua: Uno de los recursos naturales mas importantes para el ser humano, la flora y la fauna. Debido a que los seres vivos requerimos de agua para sobrevivir, su uso y a su vez, su conservacion, es fundamental para la vida. Uso directo - consumo.Petroleo: Este es un recurso natural no renovable y es utilizado para proveer energia. Debe ser utilizado de manera consciente ya que es limitado. Uso indirecto - transformacion.Animales: Las especies de fauna son sumamente valiosas. Ademas de ser fuente de alimento, son fundamentales para el balance de la cadena alimenticia. Su conservacion es fundamental ya que cada especie cuenta con una funcion especifica en su habitat y en los ecosistemas. Uso directo e indirecto.Energia solar: La energia solar es un recurso natural renovable. Este tipo de energia es producida por la luz y el calor del sol. Es fundamental para la vida y para la obtencion de energia. Uso directo.Peces: Aportan un importante fuente de alimento y contribuyen al balance de la cadena alimenticia. Uso directo como alimento.Bosque de pinos: Recurso natural fundamental. Ademas de proporcional oxigeno y reducir la cantidad de dioxido de cabono en el ambiente, funciona como un servicio ecosistemico al proveer madera para amplios usos en la construccion. Ademas, los bosques contribuyen al bienestar mental del ser humano al usarse (sosteniblemente) como area recreativa. Uso directo e indirecto.Suelo: El suelo es un recurso no renovable, por lo tanto, su uso sustentable y conservacion son fundamentales ya que un suelo fertil es esencial para la seguridad alimentaria global. Uso directo.Fossils found in layers of sediment give us clues to Earth's past. Based on the fossil record of this area, we can assume that over millions of years
Answer:
The answer is A, Sea level reached
Explanation:
I took the test
A student claims that if the animal producing the spermatozoa has a mutation in a mitochondrial gene, the probability that any offspring will inherit the mutation is zero. Provide evidence to support claim.
Answer:
Mitochondrial DNA is inherited from the maternal side
Explanation:
Mitochondrial DNA is inherited from the maternal side (from the oocyte). The mitochondria from the sperm cell including their DNA are degrade after fertilisation.
The size of the cells that make the zygote also contribute to this. The oocyte is much larger than the sperm, containing around 100,000 mitochondria, whereas the much smaller sperm cell only contains around 100. This means even initially, there are very few paternal mitochondria compared to maternal mitochondria in the first place, effectively diluting them out.
This, coupled with the degradation of the sperm mitochondria, means that offspring will not inherit mitochondrial DNA and any mutations from their father.
Sperm or the spermatozoa is a male reproductive cell. It consists of flagella, head and body. The sperm or the male cell fertilizes with the female reproductive cell called the egg to produce offspring.
If the organism producing the spermatozoa has a modification in a mitochondrial gene, then the possibility of offspring having a mutation will be zero.
The explanation for the above statement is:
Mitochondrial gene is obtained from the maternal side that is the mother's reproductive cells (oocyte).The mitochondria of the male reproductive cell the sperm degenerate after the process of fertilization and do not take part further in the process.The abundance of female mitochondria outnumbers the mitochondria present in the sperm cells.Therefore, mitochondrial DNA transfers exclusively from the mother to the offspring.
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In a pack of wolves located in Yellowstone National Park, Black paws are dominant over white paws.
What is the genotype of the hybrid?
Answer:
Explanation:The genotype is black and can be represented by Bb where "B" is the gene controlling black paws and" b" controls white paws