Question

What is it called when changes occur in an ecosystem that already exist? *

a. primary succession
b. secondary succession
c. pollution

Answer 1

Answer:

b. Secondary Succession

Explanation:

Is the changes that happen in an area where the ecosystem has been disturbed, But soil and organisms still exist.

series of changes that occur in an area where an ecosystem where soil and organisms already exist.

Answer 2

When the change arises in an ecosystem so it is called secondary succession:

What is secondary Succession?

it is the kind of succession in which the plants and animals recolonize a habitat after having a major disturbance. It is the changes that arise in an area where the ecosystem has been disturbed, also the soil and organisms should have existed.  The series of changes that arise in an area where an ecosystem, soil, and organisms should have existed. Therefore, option b is correct.

learn more about the ecosystem here: https://brainly.com/question/21711085