Changing Ecosystems

The series of changes that occurs in an area where the ecosystem has been disturbed, but where soil and organisms still exist are called...

• Disasters

• Secondary succession

• Primary succession

A volcanic eruption will result in what kind of succession?

• Primary succession

• Secondary succession

A fire or natural disaster will result in what kind of succession?

• Primary succession

• Secondary succession

A species that influences the survival of many other species in an ecosystem is

• keystone species

• poaching

• extinction

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Species that lack a _____________ are less able to adapt to and survive changes in the environment.

• habitat distruction

• diverse gene pool

• endangered species

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

A species brought into an ecosystem where it is not native is called a

• nonnative species

• native species

• nutrias

The number of different species in an area is called the area's

• economic value

• biodiversity

• poaching

How does human activity cause disruptions in ecosystems. Circle all that apply:

• Eutrophication

• Resource Extraction

• Pollution

• Nonnative Species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

NGSS.MS-ESS3-4

What type of succession is shown going from figure A to figure B?

• primary succession

• eutrophication

• secondary succession

• intermediate

In an ecosystem, there are populations of moose, rabbits, grass, and pine trees. Suddenly, a fire blazes through the area, which kills all of the populations. As the months go on, new species of grass begin to take root. This attracts animals, and eventually the ecosystem is restored.

What type of ecological succession happened?

• Primary succession

• Secondary succession

• Tertiary succession

• None of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3