English is the national language of the United States.
Note: Epigeal germination could be a kind of germination whereby the seed leaves or the cotyledons are brought on to the surface or above the soil while the shoot during germination. Hypogeal germination is a form of germination whereby the seed leaves or the cotyledons remain below the soil surface during germination.
You would expect an earthworm to have no exoskeleton because as you see it is very flexible and soft. Organisms with such have body parts that are divided and an earthworm do not have any visible parts on them also having an exoskeleton would not allow an organism to move like an earthworm does.
I believe the answer is the first one, scientists must know the layers of rock, for example, a fossil was found in bedrock, The scientist should know the types of rock in it all together. hope this helped!
I believe it would be a good root system to hold it in place against the current