Final answer:
Natural selection occurs when there is variation of traits among individuals, competition for resources, and overproduction of offspring. These conditions enable individuals with advantageous traits to have a better chance of surviving and reproducing, leading to evolutionary changes in the population over generations.
Explanation:
Conditions Required for Natural Selection
Natural selection is a critical mechanism in evolutionary biology. According to Darwin, populations evolve through natural selection when specific conditions are met. These conditions include:
Variation of traits among individuals within a population.Competition for limited resources.Production of more offspring than can survive (overproduction).Natural selection favors individuals who are better adapted to their environment, meaning those with traits that give them a survival or reproductive advantage are more likely to pass on their genes to the next generation. This condition-based process gradually leads to population-wide changes over generations.
The concept of genetic equilibrium, such as in the Hardy-Weinberg equilibrium, describes a situation where a population's genetic makeup is not changing over time. This occurs when there is:
No mutationNo migrationA very large population sizeRandom matingNo natural selectionIn reality, natural selection disrupts genetic equilibrium by ensuring that those with advantageous traits have a higher chance of survival and reproduction than those without such traits, thereby changing the genetic makeup of the population over time.
What is the main principle behind the law of conservation of matter?
A
Mass does not change phase during a reaction.
b
The total mass does not change during a reaction.
c
Heat is added during a reaction for the mass to remain constant.
D
Mass will always remain constant unless a change has occurred.
According to law of conservation of matter, mass can neither be created nor destroyed. Therefore option (B) is the correct answer.
What fundamental idea underlies the law of conservation of mass?The fundamental idea that underlies the law of conservation of mass is, a body's mass remains constant while it is in motion. This can be expressed in rate form as the rate at which the mass of a body changes over time to zero.
For instance, when coal is burned, the carbon atom in it transforms into carbon dioxide. The carbon atom transforms from a solid to a gas, yet its mass remains constant.
This proves that in a chemical process, no new or lost atoms are created. Instead, the atoms combine in a variety of ways to create goods.
Hence , option (B) which states that mass is conserved is the correct answer.
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In his expedition Charles Darwin saw a variety of finches in the Galapagos Islands. He
suggested that a finch might of migrated from the mainland. He believed that over time the
new generations adapted to the islands and the beaks in offspring showed variation.
Explain how can scientists use the different evidence of evolution to prove this.
You got this from edg, am I correct. Well he had evidence by drawing and saw the differences between between normal finches to to the ones of Galapagos island. There were 4 different finches, two had a thick beak and two others had thin beak for small wholes where insects might be hiding. He observed the differences between the beaks.
Explanation:
Final answer:
Charles Darwin observed a variety of finches in the Galapagos Islands and suggested that they may have migrated from the mainland. Scientists can use evidence such as the graded series of beak sizes and shapes and the correlation between beak shape and food acquisition to prove this.
Explanation:
In his expedition, Charles Darwin observed a variety of finches in the Galapagos Islands and suggested that a finch might have migrated from the mainland. He believed that over time, the new generations of finches adapted to the islands, resulting in variation in their offspring's beaks. Scientists can use different evidence of evolution to prove this, such as the observation of a graded series of beak sizes and shapes in the Galapagos finch species, the resemblance of the finches to a mainland finch species, and the correlation between beak shape and food acquisition.
dentify the part of the brain indicated by the red arrow
Answer:
D im almost sure
Explanation:
Answer:
cerebrum
Explanation:
the cerebrum comprises the majority of the brain and is highly involved in memory, language processing, learning, general thought, and consciousness.
Imagine you are a detective examining a crime scene. You are trying to
identify the person who committed the crime, so you collect many samples at
the crime scene. Which sample would be most useful in identifying the
person who committed the crime?
O
A. A watch and keys found at the crime scene
O
B. Pieces of flooring from the crime scene
O
C. Drops of blood found at the crime scene
O
D. Plants growing at the crime scene
Answer:
C
Explanation:
The sample that would be most useful in identifying the person who committed the crime would be option C: drops of blood found at the crime scene, as blood contains genetic material in the form of DNA.
What are DNA and a blood sample?DNA (deoxyribonucleic acid) is a molecule found in cells that contains genetic information. DNA is unique to each individual, except in the case of identical twins, and can be used to identify a person through a process called DNA profiling or DNA fingerprinting.
When blood is left at a crime scene, it contains DNA that can be analyzed by forensic scientists to create a DNA profile of the person who left the blood. This is usually done through a process called PCR (polymerase chain reaction), which amplifies the DNA found in the sample so that there is enough material for analysis. Once the DNA has been amplified, it can be analyzed to create a DNA profile.
Hence, the sample that would be most useful in identifying the person who committed the crime would be option C: drops of blood found at the crime scene, as blood contains genetic material in the form of DNA.
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Where would you expect to find the kelp forest, a type of algae, pictured here and why?
answer:
Where would you expect to find the kelp forest, a type of algae, pictured here and why? Algae live only in the epipelagic zone because it is the only zone with enough light for photosynthesis. During an El Niño year, there is increased precipitation in the Southern United States, but the north is warmer and dry
Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring
An incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is
homozygous for blue feathers. Purple offspring result. Then, two of the purple offspring are crossed. According to the Punnett
square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete
dominance?
1 in 4
O2 in 4
3 in 4
4 in 4
Answer: 2 in 4
Explanation: if the parents are both RB, one would end up red, one would end up blue, and 2 would be heterozygous and end up presenting the incompletely dominant color of purple.
Which ecosystem is the least stable?
A. A patch of lichens on bare rock
B. A rain forest on a small island
C. A savanna on a large volcanic island
D. A vast coral reef in a warm ocean
Answer:
A. Patch of Lichens on a bare rock
Explanation:
what does the letters in DNA stand for
Answer:
Deoxyribonucleic acid
The acronym DNA stands for Deoxyribonucleic Acid. It is a biological molecule that contains genetic instructions for the development and function of living organisms. The information in DNA is stored in a code made up of four chemical bases.
Explanation:The letters DNA are an acronym that stands for Deoxyribonucleic Acid. This is a type of biological molecule that contains the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses. The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). These bases pair up with each other to form units called base pairs, which are the building blocks of DNA.
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A scientist claims to have found a fossil that is more than 6 billion years old. Why is the scientists claim false?
A. Fossils disentegrate after 10,000 years.
B. Earth had not yet formed 6 billion years ago.
C. The hot magma covering early earth would have destroyed fossils.
D. Life did not emerge on earth until 5 billion years ago.
Answer:
C. The hot magma covering early earth would have destroyed fossils
1. If the primers shown below were used in a DNA analysis of person 1.2 and 3, what order would the bands appear, from top to bottom after running the gel?
SAPP
080p
FG ADIAC DIG.
od ac adica daca
Which are functions of the skin? Check all that apply.
O helps control body temperature
moves parts of the body
O serves as a barrier of protection
O
releases waste materials
o
produces vitamin A
O
gives the body support and shape
Answer:
the correct answer is A,C,D.
Explanation:
( helps control body temperature , serves as a barrier of protection , releases waste materials ) on edg.
Final answer:
The skin serves as a protective barrier, a) helps regulate body temperature, b) releases waste via sweat, and synthesizes vitamin D when exposed to UV light. It does not move body parts, support or shape the body, nor does it produce vitamin A.
Explanation:
The functions of the skin that apply from the options given are:
a) Helps control body temperature: The skin regulates body temperature through mechanisms such as producing sweat, which cools the body upon evaporation.Serves as a barrier of protection: The skin prevents the entry of microorganisms and protects against environmental injuries.b) Releases waste materials: Through perspiration, the skin helps eliminate some waste products from the body.Produces vitamin D: When exposed to UV light, the skin synthesizes vitamin D, essential for various bodily functions.Moving parts of the body and giving the body support and shape are not functions of the skin. The skin does not produce vitamin A; it produces vitamin D.
A researcher asked ten students to taste mango pickle. Seven students found the pickle taste sour while three students found it tasteless.
1. What could be the possible hypothesis of the study?
2. What can you conclude from the above study?
Will mark branliest.
Answer:
1) the possible hypothesis is that the pickles are sour in taste.
2) we concluded from the above study is that most of the students said that pickles made from mango are sour in taste.
Explanation:
The possible hypothesis is that the pickles are sour in taste because in pickles mangoes are used when they are green in color and have sour taste so we can say that the pickles which is made from these mangoes are also have sour taste. There is a variation in opinion between students about the taste of mango pickle. Most of the students found the pickle sour in taste so we can choose the result of the majority of the students and make hypothesis accordingly.
1. Possible hypothesis: The taste perception of mango pickle may vary among individuals.
2. Conclusion: Taste perception of mango pickle is subjective, with some finding it sour while others perceive it as tasteless.
1. Possible hypothesis of the study:
- The hypothesis could be that the taste perception of mango pickle varies among individuals based on their sensitivity to sour flavors or other factors such as genetic predispositions, previous exposure to similar flavors, or individual taste preferences.
2. Conclusion from the study:
- The study suggests that taste perception of mango pickle is subjective and varies among individuals. Majority of the participants (7 out of 10) perceived the pickle as sour, indicating that the sour taste is predominant. However, a minority (3 out of 10) found it tasteless, suggesting individual differences in taste perception.
- Further research could investigate the factors influencing taste perception and preferences to better understand the variability in individuals' responses to food flavors.
The study indicates that taste perception of mango pickle varies among individuals, with some finding it sour and others tasteless, suggesting individual differences in taste sensitivity and preferences.
A strand of DNA that has the bases ATCCGGTACG would make a complementary strand
type your answer...
The oceans cover approximately 70% of Earth's surface and also contain about 97% of Earth's water
supply. This enormous amount of space provides habitats for a large number of diverse organisms.
However, organisms thrive in different areas. Which statement below best describes the
distribution of life in the ocean?
A) All species of aquatic organisms have adapted to all depths of the ocean and are distributed throughout.
B)Species which thrive in mid-ocean areas are those which are adapted to a warm environment rich in oxygen
and photosynthetic organisms.
C)Organisms which are able to survive in the deepest depths of the ocean must have adaptations that allow
them to live in cold dark environments under a lot of pressure.
D)The upper depths of the ocean are teeming with large organisms that need little sunlight and are not
dependent on autotrophs.
Answer:
C.) Organisms which are able to survive in the deepest depths of the ocean must have adaptations that allow them to live in cold dark environments under a lot of pressure.
Explanation:
Organisms which live in the deepest depths of the ocean receive little sunlight, so they must adapt to live in those cold conditions with a lot of pressure constantly on them. Basically, if a creature lives in a certain part of the ocean, they are most likely adapted enough to live in the conditions that their home has for them.
The best statement describing the distribution of life in the ocean is that organisms living in the deepest depths must have adaptations for survival, such as the ability to withstand cold, dark, and high-pressure conditions.
Explanation:The distribution of life in the ocean varies depending on factors like depth, temperature, light availability and nutrient availability. Not all aquatic species can survive in all ocean conditions. Thus, the best statement that describes the distribution of life in the ocean would be C), which states, 'Organisms which are able to survive in the deepest depths of the ocean must have adaptations that allow them to live in cold dark environments under a lot of pressure.' The extreme conditions of the deep ocean require specific adaptations for survival.
For example, many deep-sea organisms possess adaptations such as bioluminescence (the ability to create their own light), increased pressure tolerance and ability to deal with cold temperatures. Other examples of adaptations include having a slow metabolism to conserve energy, as food is scarce in those depths.
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2) Which of the Oceans is THE SMALLEST?
Answer:
The arctic ocean
Explanation:
Answer:
Arctic Ocean
Explanation:
Other than size, what are the two biggest differences between the megalodon shark and modern sharks?
Answer:
they are stronger and faster.
Explanation:
25 POINTS!!! PLZZ HURRY, IM BEING TIMED
Which structures do plant cells have for making food that animal cells do not? mitochondria vacuoles lysosomes chloroplasts
Answer:
Chloroplasts
Answer:
It's the chloroplast.
Explanation:
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Choose all of the following that are examples of evidence for evolution.
Choose all of the following that are examples of evidence for evolution.
a
fossils
b
geographical distribution
c
embryology
d
comparative anatomy
e
carbon dating
f
artificial distribution
Answer:
A B C D
Explanation:
Following are examples of evidence for evolution:
a. fossils
b. geographical distribution
c. embryology
d. comparative anatomy
e. carbon dating
What is evolution?Evolution is the process by which species of living organisms change over time through natural selection. It is a slow and gradual process, occurring over millions of years, that results in new species emerging through genetic mutations and adaptations to their environment.
The concept of evolution was first proposed by Charles Darwin in the 19th century and has since been widely accepted as the scientific explanation for the diversity of life on Earth.
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What do prokaryotes have in common with eukaryotes?
O A. They both have a Golgi apparatus.
O B. They both have a liquid cytoplasm.
O C. They both have a nuclear membrane.
O D. They both have mitochondria.
Both prokaryotes and eukaryotes have a liquid cytoplasm
Prokaryotes and eukaryotes both have liquid cytoplasm where cell metabolism occurs. They do not share other features like Golgi apparatus, nuclear membrane, or mitochondria - these are exclusive to eukaryotes. option B is the correct answer .
Explanation:Prokaryotes and eukaryotes, despite their differences, share some common features. The main commonality between these two types of organisms is that they both have a liquid cytoplasm, where all of the cell's metabolic events occur. Neither a Golgi apparatus, a nuclear membrane, nor mitochondria are common to both, as these are typically features of eukaryotic cells. For instance, a nuclear membrane, which encloses the genetic material, is absent in prokaryotic cells and the Golgi apparatus, a packaging center for proteins, is also exclusive to eukaryotes. Similarly, mitochondria, the powerhouse of the cell, are only found in eukaryotes.
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Explain the difference between selective breeding and genetic engineering in the development of food crops with desirable traits.
In plants, asexual reproduction is most likely to occur through the:
A Seeds incorrect answer
B Roots incorrect answer
C Flowers incorrect answer
D Leaves incorrect answer
In plants, the asexual reproduction is most likely to occur through the stems, roots, and buds. Thus, the correct option is B.
What is Asexual reproduction?Asexual reproduction is the process of reproduction which does not involve gamete formation and fertilization. In asexual reproduction, only one parent is involved.
Asexual reproduction in plants is also called as vegetative propagation. Asexual reproduction in plants mainly occurs in the roots, stems, and the buds. Asexual reproduction does not involve seed and flower formation.
Therefore, the correct option is B.
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Final answer:
Asexual reproduction in plants often occurs through roots or other plant parts such as stems and leaves, with roots being a common method. For instance, dandelions reproduce asexually via roots, leading to genetically identical clones of the original plant.
Explanation:
In plants, asexual reproduction can occur through various organs such as leaves, stems, and roots. However, roots are commonly used for this type of reproduction. For example, the dandelion uses its roots for asexual reproduction, and woody trees like poplars and aspens can send up new stems from their roots. This can eventually lead to the creation of an entire grove of trees that are clones of the original plant. A noticeable advantage of asexual reproduction is that when cuttings or buds are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling. Many plants, like garlic and strawberries, also use underground storage organs like bulbs, corms, tubers, and runners for asexual reproduction.
Brainiest!!!
Help me
What is 6H2O?
6H2O = six molecules of water. As we learned earlier, the glucose will be used by the plant as energy. The oxygen and water will be released back into the atmosphere to help other living things.
Answer: It's six molecules of water
Explanation: six is the coefficient which means that it just increases the amount of whatever is in the actual equation
You eat pizza for lunch. Which step in the digestion process causes a chemical change in the pizza?
Your teeth bite the pizza and take a small piece into your mouth.
Your esophagus is a tube that moves the food from your mouth into your stomach.
Your teeth grind the pizza to smash it.
Your stomach mixes acid and enzymes with the food to break down protein in the pizza.
Answer:
Last one. You stomach mixes acid and enzymes with teh food to break down the protein in the pizza.
Explanation:
Answer: Pretty sure its the stomach but if there is a step which involves the salivary glands that should be the right one. if not, the stomach is the correct answer.
Explanation:
Acid in the Stomach can help breakdown food which is where the chemical change happens. The saliva also contains enzymes that break bonds in large molecules to form smaller molecules. (for the Salivary Gland)
Why is the pressure in the matrix high?
Help me!!
Answer:
It has more water molecules causing pressure to grow.
Explanation:
The pressure in the matrix, referring to a space within plant cells, is high due to the osmotic process, involving the movement of water from a lower to higher concentration. This builds up pressure in the cell, including the matrix, giving the plant rigidity.
Explanation:In the context of biology and specifically plant physiology, the term 'matrix' typically refers to the space within the chloroplast where the light-independent reactions of photosynthesis take place. The pressure in the matrix is high due to the osmotic process - the movement of water from a lower concentration to a higher concentration across a semi-permeable membrane. This process creates a build-up of pressure in the plant cells, including in the matrix.
The water-filled central vacuole exerts pressure against the cell wall - this is known as turgor pressure - giving the plant rigidity. As water moves into the cell, it increases the volume of the cytoplasm and the vacuole, thereby increasing the pressure within the cell, including the matrix.
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Which of the following is NOT an impact of wildfires? (Notice it says NOT)
a) Erosion
b) Air Pollution
c) Water Pollution
d) None Of The Above
Answer:
D - None of the above
Explanation:
Answer:
d.
none of the above
Explanation:
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What is similar about the primary structure of each protein?
The proteins are:
Milk
Meat
Eggs
Answer:
They are similar to the protein structure found in our bodies!
Explanation:
Which of the following best defines instantaneous speed? (3 points)
It is a measure of how far an object moves in a certain time.
It is the total distance traveled over the total time.
It is the speed of an object in a specific direction.
Answer:
option 1st
Explanation:
"It is measure of how far an object moves in a certain time".and there is a one more definition of instantaneous speed
"The speed of an object at any instant during its motion is called Instantaneous Speed".I HOPE THAT THIS ANSWER HELPS YOUAnswer:
(A) It is measure of how far an object moves in a certain time.
Explanation:
Weather or Climate?
The temperature is currently 3*C
Our warmest month is August
There are only cirrus clouds in the sky today
The nighttime low is expected to be -5*C
The fog is making driving difficult
The leaves are turning colors and falling off the trees because the days and nights are cooler
A heat wave in New York lasting for days
The amount of precipitation measured over the course of a year
And overnight freeze damages orange crops in central Florida
A geological period (The Ice Age) lasting millions of years during which the earth exhibited large glaciers and ice sheets
A seabreeze moving across central Florida Peninsula
In 2012, England had a record wet summer while the U.S. had drought conditions
Please help
Which telescope was first used to observe the skies?
Galileo's telescope
Hubble Space Telescope
Gran Telescopio Canarias
Leviathan of Parsonstown
Answer:
Galileo's Telescope
Explanation:
The science of astronomy took a huge leap forward in the first decade of the 1600s with the invention of the optical telescope and its use to study the night sky. Galileo Galilei did not invent the telescope but was the first to use it systematically to observe celestial objects and record his discoveries
Line is the visual path the eye follows to produce
A stopping point
O A feeling of motion
A sense of proportion
O A feeling of balance