Answer:A. differing densities of the elements that make up the Earth.
Explanation: The densities of the different materials making up the Earth surface and the Earth crust, due to the varying density of these materials it makes it difficult to break certain types of materials.
When the time required to break down materials differ,the earth's surface will have different layers caused by the time difference between the breakdown of these materials.
The more the density of the material the more difficult it is to break it down.
Extrusive igneous rocks are formed by cooling lava. Since
the temperature gradient between lava and Earth’s atmosphere is very big,
cooling is very rapid. The second option is deemed true, which also means the
third option is false. Foliations occur only in metamorphic rocks, deeming the
forth option false. Since extrusive igneous rocks are formed at the surface of
the Earth, there would be no confining pressure, which means the first option
is false.
Answer:
The answer is C mexico city hope this helps and does not get deleted again
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some birds will fly south for the winter and other animals will hibernate, and stock up on food and fat to last throughout the winter.
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A coral reef is a reef-shaped structure in the sea, formed by anemones and which over time becomes large enough to have a significant ecological and physical impact on its environment. These are the largest structures built from living organisms in the world. Coral reefs are complex marine ecosystems. They are a biotope (area of life) of a biocenosis (community of living beings) consisting of plants and animals, for example worms, shellfish, sponges, thorns and crustaceans. Coral reefs play a significant role as “breeding grounds” for the offspring of fish inhabiting the high seas.
