What is one difference between primary and secondary succession?

a. primary succession is rapid and secondary succession is slow.
b. secondary succession begins on soil and primary succession begins on newly exposed surfaces.
c. primary succession modifies the environment and secondary succession does not.
d. secondary succession begins with lichens and primary succession begins with trees.

B. Secondary succession begins on soil and primary succession begins on newly exposed surfaces.

Explanation:

Succession is the natural development of a series of biotic communities at the same site. There are two types of succession; primary and secondary.

Primary succession occurs on lifeless unoccupied areas while secondary happens right after that and in there soil and some organism is present already.

I hope this answer helps you.

most community's take hundreds of years to become stable

it's c.us forest service