The homology of animals is based on scientists current understanding on the evolutionary history of living species.
Beneath the dermis, and is mainly used for fat storage
<span>Some scientists study the way fossils and living organisms are distributed, or spread out, on the Earth. What is this area of study called? B</span>iogeography
The continental shelf is a gently sloping feature found at the edge of a continental landmass going seaward from the coast. Rivers that empty into the sea can produce currents that are strong enough to erode the material that builds the shelf. When this occurs channels or submarine canyons are formed. These canyons are deep and dark as no light can penetrate these regions. The canyons often lead out to sea towards the edge of the shelf.
