Help me. please and thank you.

A i think

i hope this helps

Answer:

An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.

Explanation:

Answer:

One biotic factor includes soil, air(oxygen and carbon dioxide), water.

One biotic factor includes animals and plants.

Both factors are different in each ecosystem. This is because, for example, the soil in desert ecosystem can differ from the polar ecosystem. Animals in polar ecosystems include polar bears, wolves, etc. while desert ecosystems have animals like deer, artic fox, etc.

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Answer:

Explanation:

Carolus Linnaeus wanted to classify the hibiscus flower. He began by examining the color of the flower, its petal shape, its petal numbers, and the arrangement of stamens and petals. What is his basis for classifying the hibiscus flower?

the classification is based on both genetic and physical characteristics the classification scheme is based on the flower's genetic characteristics the classification scheme is based on the flower's physical characteristics the classification scheme is based on the flower's chemical characteristics

Answer:

igneous, sedimentary, and metamorphic

Explanation:

Igneous rocks form when molten rock cools and solidifies.

Answer: The answer would be Precipitation.

Explanation:

i heard it had to do something with DNA in the bones all animals that where fossalized where identafied by using the DNA in their bones

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DNA in the bones used to determine that the first scientist had misidentified the fossil.

Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.

There are four main types of fossils, all formed in a different way, which are conducive to preserving different types of organisms. These are mold fossils, cast fossils, trace fossils and true form fossils.

Fossils are the remains or traces of ancient life that have been preserved by natural processes. Examples of fossil include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber.

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Answer:

B. it expands and shrinks in the soil

Answer:

it is the part visible to the human eye unless it rains.

Explanation:

should be more moisture

Forest soil is the appropriate soil for the vegetation.Options C and D are correct.

The reason for vegetation in forests is because of the supportive factors that are involved in the good plants life.

Forest soil has more moisture than sandy soil therefore the types of plants that are grown in soil of forests are more qualitative and more superior than the sandy plants which are facing certain limitations and facing certain situations.

Forest soil supports plant life, but sandy soil does not support any plants. Forest soil produces more superior life and the plants life are found in the forest area and the sandy plants are lesser found in the sandy areas.

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Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria, which release energy from glucose during respiration to provide the energy needed for active transport.

Plants do not have a heart, blood, or circulation system, but they do need a transport system to move food, water, and minerals around.

They use two different systems - xylem moves water and mineral ions from the roots to the leaves - phloem moves food substances such as sucrose (sugar) and amino acids from the leaves to the rest of the plant. This movement of food is called translocation. Both of these systems contain cells that make continuous tubes running the full length of the plant from the roots, up the stem, and through the leaves. They are like blood vessels for the plant.

Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria, which release energy from glucose during respiration to provide the energy needed for active transport.

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Answer:

yes because a thermodynamic system (isolated system) enclosed by rigid immovable walls through which neither mass nor energy can pass.

Answer:

The blue arrows in circles indicate that cool air is sinking

Explanation:

Warm air is less dense than cool air. For this reason, warm air rises, creating a low pressure region, and cool air, which is more dense than warm air, sinks creating a high pressure zone. In this description, the red arrows represent the hot air rising up to the sky, and the blue arrows represent the cool air sinking down. The reason warm air is less dense is because its molecules are further apart than when it is cold, making it lighter per cubed square foot.

So, we can conclude that option a) Warm air is rising is incorrect, because the warm air rising is represented by the red arrows pointing up form the land to the sky.

Options c) Cool air is less dense and d) warm air is more dense are also incorrect, because as mentioned before, cool air is more dense than warm air.

Answer:

e rescue workers can get energy to the batteries in their equipment during rescue missions by using a generator to convert the kinetic energy to potential energy. ... The best way is to use a hand crank such as a hand cranked flashlight or radio because it is easy to power enough energy for a short amount of time.

Explanation:

Answer:

A

Explanation:

Answer:

A

Explanation:

When sea levels recede, then many animals, plants, and organisms that were used to living underwater die. Over time, these dead plants and animals become fossils. The presence of these fossils can tell someone that the sea levels receded over time.

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Answer: It's thirty I listen to that guy got it wrong

Answer:

thirty

Explanation:

Answer:

35%

Explanation:

Answer:

They all start out as a single cell and develop the same pattern of structures such as tails and pharyngeal slits. Some of those structures remain as the embryo gets older, but others go away.

Explanation:

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All vertebrates evolved from a common ancestor, the genetic data that directs their development is nearly the same.

Numerous types of proof support the theory of evolution Homologous structures supply proof for shared ancestry, while analogous structures exhibit that alike selective forces can produce similar adaptations

Thus,  the development of a human, pig, frog, and chicken the same due to genetic data.

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rainfall  i think

Explanation:

Answer:

B. The Atlantic Ocean did not exist in earlier times.

Explanation:

It simply didn't yet exist; there was only Pangaea surrounded by a global ocean. Before the Atlantic Ocean could open Pangaea had to be split. ... Deep beneath the Atlantic's waves it erupts as lava, providing new crustal material as it slowly pushes the continental plates apart.

Answer:

When one force is greater than another, the forces are not balanced, they are unbalanced. By applying an unbalanced force, you can change the motion of an object. Unbalanced forces can make an object at rest start moving, make a moving object stop, or change the direction and speed of the object.