Hair, Feathers, skin, fat, and muscle do not fossilize, they decay, so they cannot be found in fossils.
Another thing about fossils is that because they do not have any of those features, no one can tell what colors the animal may have been.
The biggest economic challenge that effects North Africa and Southwest Asia is their economic dependence on oil and gas sale and it's price. This is what drives their economies, and is pretty much the only significant income they have. So any disturbance in the price of this two products is affecting them significantly. The world is also moving towards greener fuels and renewable energy, which puts this regions in a very bad position in the long term. So if they want to keep their economic stability they will have to follow the world trends and use their natural advantages to be competitive in the world market, or other wise they will crumble economically.
Answer:
The answer is D. The density of the lithosphere and asthenosphere
Explanation:
Isostation is a condition of the gravitational balance between the layers of the earth's crust and mantle which causes the crust to "float" over the mantle. The concept of Isostation explains why there are differences in the height of the earth's topography.
According to the concept of isostation that the material of the earth's crust floats because of the balance between the weight of the material and the upward force carried out by the fluid layer.
The existence of an isostatic balance is based on the mass of each unit part of the earth's crust giving equal pressure to subcrustal matter.
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