Changes in the Ecosystem

In what ways can humans change an ecosystem?

• by making a region flood

• by creating hurricanes

• by adding to the amount of pollution in an ecosystem

• by enjoying nature

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

NGSS.MS-ESS3-4

What is succession?

• the continuation of an ecosystem in its present state

• the balance between humans and nature in an ecosystem

• the way to stop pollution in an ecosystem

• the gradual growth of new organisms in an ecsystem

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Which of the following is a natural disaster that could wipe out an ecosystem?

• a sunny day

• a rainstorm

• a forest fire

• an oil spill

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS3-2

Why would algae grow in a lake?

• because the lake is polluted

• because the lake is a newly created ecosystem

• because there are a lot of fish in the lake

• because a natural disaster destroyed the lake

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS1-5

A gradual change in an ecosystem is called a _____________________________.

• succession

• bust

• boom

Ecosystems are healthy when all their parts are in ______________________________.

• balanced

• unbalanced

• threaten

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-5

Series of changes in the physical environment or an ecosystem over a period of time

• secondary succession

• primary succession

• ecological succession

• secondary succession

Tags

NGSS.MS-LS2-4

2 kinds/types of succession

Disturbance changes an existing ecosystem without removing the soil like forest fire

• secondary succession

• primary succession

• ecological succession

• succession

May be caused by sudden natural disturbances or caused by human activities like mining

• succession

• ecological succession

• primary succession

• secondary succession

Tags

NGSS.MS-LS2-2