Question

the diagrams above show an ecosystem during different stages of ecological succession.
in which order will these stages occur, from earliest to latest?
a 4, 2, 1, 3
b 1, 2, 3, 4
c 3, 1, 4, 2
d 2, 4, 3, 1

Explanation:

Ecological succession starts with bare rock (stage 4). Then, soil forms and pioneer species (small plants, stage 2) colonize. Next, intermediate species (stage 1) grow, followed by climax community (large trees, stage 3). So the order is 4, 2, 1, 3.

Answer:

A. 4, 2, 1, 3