Answer:
d
Explanation:
A student brings a specimen and claims it is a living organism . explain how a microscope could be used to determine if the specimen is a living thing .
I just need someone to check my answer
Which characteristic is shared by all arthropods?
All arthropods have six legs.
All arthropods live on land.
All arthropods have exoskeletons.********
All arthropods are insects.
Which process or stage occurs during incomplete metamorphosis?
A. Chrysalis
B. Pupa
C. Exoskeleton shedding
D. Larva
Answer:
C: Exoskeleton Shedding.
Explanation:
Took the test.
The chemical weathering of rocks at the Earth's surface releases _______ into the biosphere.
phosphorus
sodium
nitrogen
calcium
Answer:
Phosphorus
Explanation:
The four valence electrons of a carbon atom are in its innermost/outermost energy level
Valence electrons are defined as the electrons are present in the last shell of the atom and are available for bonding.
The valence electrons of carbon are present in the outermost shell of carbon.
The valence electrons of carbon can be explained as:
The carbon has four valence electrons in its outermost shell. the carbon is a tetravalent atom, which can make four bonds to complete its octet. The atomic number of carbon is 6, which means in shell 'K', it has 2 electrons, and L shell has 4 electrons. Thus, a carbon atom will require four electrons to complete its octet.
Thus, carbon has 4 electrons in its outermost shell or energy level.
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How do organisms contribute to the carbon cycle?
A. through metabolic processes
B. through the diffusion of hydrogen ions
C. by reflecting light
D. by splitting water molecules
Answer: A. Through metabolic processes.
Explanation:
Carbon is a chief component of the biomolecules present in the organisms. Also it is released in the form of product in the metabolic process called respiraton into the atmosphere. The plants take up carbon in the form of carbon dioxide from the atmosphere for conducting a metabolic process called photosynthesis. This maintains the balance of carbon in nature and in carbon cycle.
how do cells in your body get energy
how does the covering of the bats and eagles forelimbs different
Which biological process involves the conversion of one type of chemical energy into another type of chemical energy? photosynthesis active transport cellular respiration transpiration
There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which choices are also major levels of classification? Choose all answers that are correct.
A. Class
B. Order
C. Family
D. Level
Class, order, and family are also major levels of classification. Therefore, options A, B, and C are correct.
What is the classification of organisms?Classifying living things entails grouping several species according to traits they have in common. The term used to describe the classification of living things is taxonomy. Beginning at the most general level and working its way down to the most specific, the taxonomy of living things.
To study live organisms conveniently, classification is required. It is vital to understand the many types of organisms. It facilitates the accurate identification of different organisms. Understanding the history and evolution of organisms is useful.
Kingdom, phylum, class, order, family, genus, and species are levels of classification. Hence, options A, B, and C are correct.
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The tropical rainforest biome is found primarily near the
Tropical rainforests are found in the world’s hottest and wettest areas, namely those closest to the equator. The world’s largest tropical rainforests are in Amazon basin in South America, lowland regions in Africa, and the islands off of Southeast Asia. While they are found in abundant in Sumatra and New Guinea, small areas are also found in Central America and parts of Australia.
The density of a quart of water and a teaspoon of water are?
1. How would temperature changes in the atmosphere, enough to melt Antarctic ice, affect the hydrosphere, lithosphere, and biosphere
Answer: The green house gases plays an important role in controlling the overall temperature of the earth. A small increase in the composition (in terms of ppm/ppb) of these green house gases in the atmosphere, such as CO2, water vapour, methane, CFC etc can lead to a subsequent increase in the earth's average temperature, which could be sufficient enough for the melting of the ice at Antarctica.
Thus , it will also be affecting the biosphere as the sea level will rise, surface temperature will increase and life would be difficult to sustain.
Note- ppm stands for parts per millionppb stands for parts per billion
Melting Antarctic ice due to rising temperatures would lead to a rise in sea levels affecting coastal regions, reduced albedo effect accelerating global warming, and altered ecosystems impacting biodiversity and agriculture.
Significant temperature changes in the atmosphere that lead to the melting of the Antarctic ice would have profound effects on Earth's hydrosphere, lithosphere, and biosphere. If temperatures increase enough to melt the Antarctic ice sheet, the resultant rise in sea levels could flood coastal cities and disrupt numerous ecosystems.
The melting ice would reduce the albedo effect, where light-colored surfaces like ice reflect solar radiation, leading to greater absorption of heat by the Earth's surface and exacerbating global warming. Changes to the lithosphere would include the potential for altered coastlines and increased sedimentation in oceans.
The biosphere would be affected through habitat loss, altered food chains, and shifts in the distribution of species. Agricultural production might also be impacted as climate zones shift. These links between melting polar ice and global systems highlight the intricate nature of climate change and underscore the potential for widespread and cascading environmental consequences.
Which of the following best explains why air pollution that was once blamed for global cooling is now considered responsible for global warming? a. Pollution began reflecting sunlight and heat rather than absorbing it. b. Evidence of global warming became overwhelming. c. Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it. d. Congress required scientists to assign a cause to global climate change.
Answer: c. Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
Scientist mistakenly thought pollution reflected sunlight and heat rather than absorbed it. This best explains that air pollution that was once blamed for global cooling is now considered responsible for global warming because the carbon dioxide from greenhouse effect will reflect the sunlight and will split the UV rays and prevent them to enter inside the earth. But carbon dioxide is responsible for increasing the global temperatures.
Answer:
(c) Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
Explanation:
edg 2020
What is the meaning of life? Our science teacher asked us this
4. If a single-celled saltwater organism is placed in freshwater, it will not be able to survive. Which statement explains why this is true? *
1 point
A The organism’s cell will absorb too much water through osmosis.
B The organism’s cell will release too many hydrogen ions through diffusion.
C The organism’s cell will release too much water through facilitated diffusion.
D The organism’s cell will absorb too many sodium ions through osmosis
For a science experiment, a student rubs a mineral against a porcelain plate. The students has just performed......?
It is a Streak test.
Cost is an example of a(n) constraint in designing a product. t or f
What removes harmful substances for a cell?
The first one to answer will get marked brainliest answer
Lysosomes, peroxisomes, and the endoplasmic reticulum are organelles responsible for removing harmful substances in a cell.
Explanation:The organelles responsible for removing harmful substances in a cell are:
Lysosomes: These are membrane-bound organelles that contain digestive enzymes. They break down and recycle cellular waste.Peroxisomes: These organelles are involved in the breakdown of fatty acids and detoxification of harmful substances.Endoplasmic Reticulum: The endoplasmic reticulum, specifically the smooth ER, is involved in detoxifying drugs and toxins in the cell.Learn more about Organelles responsible for removing harmful substances in a cell here:https://brainly.com/question/33512437
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Which tool did Maurice Watkins use when studying DNA?
Answer:
X-ray diffraction
Explanation:
Maurice Wilkins studied the structure of DNA using X-ray diffraction, also validating the work done by Watson and Crick on the structure of DNA.
Imagine you are stranded on a deserted island with 400 individuals. Once you and the others have built some shelters and taken stock of the island, how would you move forward? Based on what you know about government, describe how you would set up the law-making body of government for the island’s survivors. Make sure to include the number of members in your legislature, how many houses it will have, how long members can be law makers, how they are chosen, and their responsibilities.
To establish a law-making body on an island with 400 individuals, one could create a bicameral representative legislature with members serving two-year terms, chosen through democratic elections.
When establishing a law-making body on a deserted island with 400 individuals, it would be prudent to create a representative form of government inspired by the literature on the subject, such as Daniel Elazar's theory and John Locke's social contract theory. The number of members in our legislature could be based on the principle that as the population grows, the number of representatives should increase, ensuring that the interests of all parts of the community are properly attended to. A bicameral legislature might be more suitable, dividing the law-making body into two houses to balance the representation of different groups.
Members could serve terms of two years to ensure that they remain accountable to the electorate and reflect the community's current interests. They would be chosen through democratic elections wherein all members of the community have the right to vote. The responsibilities of this legislative body would include making laws designed for the common good, ensuring fair taxation, and serving as the main body where government power, especially regarding lawmaking, resides. Engaging the community in regularly scheduled elections would follow the principles both Locke and Elazar highlighted, promoting the values of freedom, security, and the representation of the diverse interests of the island inhabitants.
Where on earth are single-celled organisms generally found?
If an intercellular signal relies on some type of receptor to enter the cell, what happens next?
A. The signal produces an enzyme that spreads the message.
B. The signal is decoded by a hormone and then recoded for the ribosomes
C. The signal is transferred to an adjacent cell where it is interpreted.
D. The signal is delivered and intracellular communication takes over.
The correct answer is option C. The signal is transferred to an adjacent cell where it is interpreted.
The cell signals are produced in many forms. The intercellular signals, which rely on the receptors to produce their effects, are generally secreted in the close proximity of the receptor cells. These signal molecules are transferred to the adjacent cells, where it binds to the receptor and binding of the molecules to the receptor causes the activation of the recipient cells.
So, I help some of you, can you help me??? I need help with all of them.
P.S. I don't know if this is Biology or Chemistry.
Which of the following occurs when substances undergo chemical changes?
Bonds between atoms are broken and new bonds are formed.
Atoms change from one element into another element.
Old atoms are destroyed and new atoms are created.
Atoms change in size and shape to form new substances.
Bonds between atoms are broken and new bonds are formed of the following occurs when substances undergo chemical changes.
What are Chemical changes?Chemical synthesis, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance.
These processes are referred to as chemical reactions, and they are typically irreversible barring additional chemical reactions. Exothermic processes are those that generate heat; endothermic reactions, on the other hand, are those that may need heat in order to proceed.
The science of chemistry places a lot of emphasis on comprehending chemical changes.
Therefore, Bonds between atoms are broken and new bonds are formed of the following occurs when substances undergo chemical changes.
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If the guide words on a dictionary page are manage and massive, which word will NOT be on the page?
1) mark mapmaker mast martin mascot
In a dictionary, the word 'mark' would not be present on a page with the guide words 'manage' and 'massive' as it does not fit alphabetically between the two.
Explanation:The guide words on a dictionary page give you the first and last word on that page. Therefore, any word that fits alphabetically between the two guide words should be on that page. Looking at the guide words 'manage' and 'massive', all words beginning with 'ma-' and alphabetical order between 'manage' and 'massive' will be included. Thus, the word that will NOT be on the page is 'mark'.
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WILL MARK BRAINLIEST a euglena is a unicellular organism why is it a eukaryote like the plant and animal cells shown here
Answer:
"Amoebas, paramecia, and euglena are all considered eukaryotic cells because they contain membrane-bound organelles which include a defined nucleus.''
Explanation:
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Euglena is considered a eukaryote because of its complex internal structure, including organelles similar to those in multicellular organisms. Its characteristics like motility and photosynthesis have led to a complex taxonomical classification within the Euglenozoa group, and its phylogeny suggests it is an early-diverging eukaryote.
A euglena is a unicellular organism that is classified as a eukaryote because it has a complex internal structure similar to that of multicellular eukaryotes such as plants and animals. Euglena exhibits features like a contractile vacuole for expelling excess water, an eyespot that is sensitive to light, and chloroplasts for photosynthesis. It also has a pellicle which provides some rigidity and allows for movement by changing its shape. Despite being unicellular, euglena have a high degree of internal organization with organelles that perform functions analogous to organs in multicellular organisms.
The group they belong to, the Euglenozoa, demonstrates characteristics that have historically led to confusion in classification, with some members performing photosynthesis (like plants) while being motile and heterotrophic (like animals). Taxonomical and phylogenetic studies position euglena as early-diverging eukaryotes, making them part of a small group of distinctive unicellular organisms. Their flexibility and motility, associated with their lack of a rigid cell wall, are hallmarks of their eukaryotic nature.
Please Help me. i have this due tomorrow. its been a bad day for me:
D: Pleaseeee
With these explanations, we have determined that Diagrams A and B represent single elements, Diagram D represents a compound, and Diagram C represents a mixture. Diagrams A and D differ in that A is a pure element with identical atoms, while D is a compound with atoms of two different elements bonded together.
To answer the questions based on the diagrams provided in the image, let's go through them one by one:
Question 2: Interpret Diagrams
Which diagram or diagrams represent a single element? Explain.
Answer:
- Diagram A represents a single element because all the balls (atoms) are of the same color, indicating they are all atoms of the same element.
- Diagram B also represents a single element, with all the balls being the same color, indicating they are the same kind of atom.
Question 3: Compare and Contrast
How do the atoms in Diagram A differ from those in Diagram D?
Answer:
- In Diagram A, all the atoms are the same color, indicating they are all of the same element. There is no indication of bonding or interaction between the atoms.
- In Diagram D, there are atoms of two different colors, indicating two different kinds of atoms. The arrangement suggests that the atoms are bonded, forming molecules of a compound.
Question 4: Apply Concepts
Which diagram or diagrams represent a mixture? Explain.
Answer:
- Diagram C represents a mixture because it contains balls (atoms) of more than one color, indicating more than one kind of atom, but there is no indication that the different atoms are bonded to each other, which suggests a physical combination rather than a chemical one.
What is the source of nearly all of the energy for producers and consumers? A) oxygen B) plants C) sunlight D) water
Marble is a metamorphic rock. Describe how a metamorphic rock.
Answer:
The metamorphic rocks are the secondary rocks that are formed when a rock undergoes changes due to the changing heat and pressure conditions. They are derived from either sedimentary or igneous or other metamorphic rocks. For example, Quartzite, Marble, Schist and Gneiss.
The metamorphic rock marble is formed when the sedimentary rock named limestone undergoes changes because of the increase in the temperature and pressure condition. Marble is widely used in the sculptures, paving stones, and also to make monuments.