I believe they cannot start with big trees and bushes because the there is not enough nutrients in the soil, so instead pioneer species pave the way for primary succession.
Answer:
active transport
Explanation:
I like to remember it by active transport has the name active, which means it requires activity
america red tail eagle and eagle, and the zebra and Oxpeckers eat ticks and other parasites that live on their skin of the zebra and the zebra will help the Oxpeckers by walking long place.and the
squirrle and the nut
Overlapping niches lead to competition because they need the same resources such as food sources
