Question

When does secondary succession occur?
A. After an avalanche covers a slope with rocks
B. After a forest fire burns down all of the trees
C. After a glacier retreats leaving rock rubble behind
D. After a volcano erupts and covers the mountain side with lava.

stuck on this one!

Answer 1

B is right.

Answer 2

Secondary succesion is one of the two types of ecological succession of plant life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting soil whereas primary succession usually occurs in a place lacking soil.

Answer 3

The answer is B.

Answer 4

yes,B

Answer 5

thanks to all:)