Changes to an Ecosystem

Which change would least likely cause plants in an ecosystem to perish?

• an earthquake on a grassland

• a hurricane along a beach

• a fire in a forest

• a flood in a valley

Tags

NGSS.MS-ESS3-2

NGSS.MS-LS2-4

What would happen to this food chain if there was no grass?

• The grasshoppers would eat the mice, and the snakes would move away.

• The mice would have more grasshoppers to eat.

• The snake population would increase.

• The grasshopper population would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

• small ocean plants

• small ocean animals

• tuna

• shark

Tags

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-LS2-3

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-LS2-4

What is a negative of the picture of the manmade changes compared to the natural habitat image?

• The animals will get more food than before

• It destroys the animals' habitat.

• The animals are safe and have found homes more easily.

• There is less pollution than before.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

What is a positive in the after image compared to the before image?

• There are more animals because of an increase of plants.

• There is less animals because humans adopted them.

• There water supply evaporated because of heat over time.

• The water supply went up.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Is the after image a mostly positive image or a mostly negative image?

• Mostly negative image

• Mostly positive image

• Mostly trashy image

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

In a pond ecosystem, what would happen to frogs if the insect population decreased?

• There would be more frogs in the pond

• There would be more insects in the pond

• There would be less frogs in the pond

• More fish would move to the pond

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What would most likely happen if an ecosystem no longer received sunlight?

• The number of herbivores would increase

• The number of plants would increase

• all organisms would adapt

• All living organisms would eventually die

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4