Answer:
C. natural selection
Explanation:
Natural selection is when the organisms that have the better adaptation so they survive. In this case, the green was the better adaptation so they lived.
A holdfast is a root-like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate.
5a. the force moving object one place to the next
5b the force moving object without anything happening
5c the force moving a object and changing its position
Decomposition. Chemical decomposition refers to the breakdown or separation of a complex compound into a much simpler compound or elements. It could also mean a breakdown of one phase into two or more phases.
A decomposer.
I hope this helps you, and have a good night! :D