I can understand it so wait me aminute i gonna go to google search
Answer:
by location and by dominant tree species
Choice A is correct
Explanation:
Forest ecosystems are named by location and by dominant tree species.
Forest ecosystems are defined by a common set of characteristics that make the forest ecology of a given area unique. The classifications are usually named for the dominant trees and plant species.
Answer:
it allows only some materials to pass through and leave the cell.