Section 4: Changes in Communities

Question 0

What is primary succession?

Answer 0

A series of changes that occur where there is no soil or organisms.

Question 1

What is succession?

Answer 1

A series of predictable changes that occur in a community over time.

Question 2

What is a pioneer species?

Answer 2

The first species to grow in primary succession. They also help develop soil.

Question 3

Tell whether the situation is primary or secondary succession:
An old house was torn down. Small weeds and grasses grew in the vacant area. Over the next few years, trees and bushes began to grow.

Answer 3

Secondary succession.

Question 4

Tell whether the situation is primary or secondary succession:
An undersea volcano erupted and formed a small island. Mosses and lichens began to grow on the bare volcanic rock.

Answer 4

Primary succession.