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Changes in ecosystems

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Some damaged ecosystems can recover after a disturbance

a)

True

b)

False

2.

Ecosystems only change slowly after natural disturbances.

a)

True

b)

False

3.

The process in which organic matter and nutrients slowly build up in a body of water is......

a)

Succession

b)

Biodiversity

c)

Eutrophication

4.

Select the natural disturbance to an ecosystem

a)

Clearing land for a new intersection.

b)

Cutting down trees in a forest for wood to build houses.

c)

A hurricane's strong winds blowing trees.

5.

Changes in climate, development of disease, and human activity all impact an ecosystem and affect what resources are available to organisms.

a)

True

b)

False

6.

Ecosystems eventually stop changing

a)

True

b)

False

7.

The slow development or replacement of an ecological community by another ecological community over time is called......

a)

Eutrophication

b)

Succession

c)

Biodiversity

8.

What are the two types of ecological succession

a)

Primary & Secondary

b)

Biodiversity & Primary

c)

Secondary & Eutrophication

9.

The first organisms to live in an unhabituated area is called....

a)

Pioneer

b)

Primary Succession

c)

Pioneer Species

10.

The number and variety of species that are present in an area is referred to as....

a)

Biodiversity

b)

Succession

c)

Climax Species