Facilitated diffusion requires transport proteins membrane pouch membrane proteins energy

most community's take hundreds of years to become stable

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above