The answer is B. Asteroids
A week is the correct answer
Because they can usually predict mostly accurately up to 5-7 days which matches the answer for one week.
Hope that helps :)
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.
The answer is K-selected.
The population size of K-selected species is fairly constant in time, unlike the population size of r-selected species. r-selected species are usually bellow carrying capacity and the population size is density independent. On the contrary, K-selected species are usually near or at carrying capacity and the population size is density dependent.
Answer: Plants are cloned to produce identical plants quickly and economically.
