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:
The balloon drifts in a counterclockwise direction from 9:00 a.m. to 12 (Midnight) 3.
Cancerous cell just continue to divide giving rise to mases of cells called tumor.
The growth or tuning of plant root toward or away from moisture
