I believe it is the pacific ocean as that is the ocean where the Mariana Trench is located, and the Mariana Trench is the deepest place in the Oceans
I think its D not sure though
Organisms used to be classified in the earliest times according to their size. As science progressed, they started getting organized by their physical traits and now they're organized by traits found in their species that are not found in others based on the theory of evolution. They are classified according to how they developed from a starting organism.
Autotroph's are living organism which produce complex compounds
