Your answer is (B.)
Fossils in newer layers if rock are generally estimated to be younger than fossils found in the deeper layers because it is closest to the surface. The soil and earth didn't have enough time to "bury" the remains of the dead animal ( Bury is used for a simpler term) underground. The farther down a fossil is the more likely it is older unless the animal tends to burrow. Seeing as the question is probably talking of older animals that is unlikely for an animal to burrow that far. So your answer is B.
As the baby grows and develops the cellular level rises. They grow in Length and in width!
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The role is to build up water with its dam to create a lake thus creating parts of the ecosystem it is also food for some animals.
Answer:
2, phenotype
traits are determined using genetics
An environmental scientist might study the effect of soil pollution on plant growth. This is true.
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