Changes in an Ecosystem

The removal of which organism would cause all other populations to decrease?

• small ocean plants

• small ocean animals

• tuna

• shark

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

What might happen to the rest of the food chain if there was an increase in the grasshopper population?

• The mouse population will decrease.

• The snake population will decrease.

• The hawk population will decrease.

• The grass population will decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What might happen to the rest of the food chain if there was a decrease in the snake population?

• The grasshopper population will increase.

• The mouse population will decrease.

• The hawk population will decrease.

• The grass population will decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

All of the following might happen to the rest of the food chain if there was a decrease in the shrew population EXCEPT -

• The grasshopper population will increase.

• The owl population will decrease.

• The grass population will increase.

• The grass population will decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which organisms are least likely to perish if this grassland is flooded?

• butterfly and jackrabbit

• hawk and butterfly

• coyote and jackrabbit

• coyote and hawk

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Plants, insects, frogs, and snakes live in an ecosystem. What would happen if the snakes were removed from the ecosystem?

• Insect population would increase.

• Plant population would decrease.

• Frog population would increase.

• Frog population would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What would happen to a coyote (carnivores) population if wildfires killed the prairie grass, which is eaten by the deer (herbivores)?

• Without the grass the deer would die.

• Without the grass the deer and coyotes would die.

• Without the grass the coyotes would die.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

How might a chipmunk be affected if the decomposers in the ecosystem decrease a lot because of a forest fire?

• The chipmunks might die out

• The chipmunks will not be affected

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What kind of natural disaster helps some forest communities by allowing some trees to release their seeds, by clearing away deadwood, and by encouraging new growth?

• earthquake

• tornado

• fire

• volcanic eruption

Tags

NGSS.MS-LS2-3

What is the specific definition for human changes

• changes made by humans

• changes of the human body

• changes made by humans to ecosystems

• changes made by humans to organisms

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4