Review

Which of these populations is most likely to decrease if the number of grasshoppers decreases?

• plants
• frog
• praying mantis
• owl

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Natural disasters can also change ecosystems. What can organisms do if a disaster happens?

• Fight, Survive, Struggle
• Relocate, Adapt, Die
• Stay, Sleep, Survive
• Eat, Sleep, Repeat

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NGSS.MS-ESS3-2

NGSS.MS-LS2-4

An example of a natural change to the ecosystem is:

• A highway built in the middle of the desert. 
• Lightening strikes and starts a fire in the forest. 
• A rancher placing too many grazers in a small area leading to overgrazing.

The removal of trees and plants can cause problems such as soil erosion. 

• True
• False

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NGSS.MS-LS2-4

NGSS.MS-LS2-5

How does a bird "change its environment" to meet its NEEDS?

• builds a nest
• flies around
• catches bugs
• looks for something to eat

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following would have a negative impact on an ecosystem

• constructing highways
• planting trees
• recycling paper

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

How would building a highway affect an ecosystem?

• saltwater pollutes fresh water
• marine life is threatened
• it would not change the ecosystem
• animals cannot travel through their ecosystem the same

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

There are many large-mouth bass, a type of fish, living in a small lake near Waco, Texas. How would increased fishing in the lake effect the lake ecosystem?

• Predators of the bass might starve due to loss of a food source
• The population of the bass’ prey would decrease.
• The bass would spend more time swimming near the surface
• Water level in the lake would decrease as more fishing took place
  

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

In a grassland ecosystem, lions prey on wildebeest. The population of lions has declined steadily because of illegal hunting. What will most likely happen to the population of wildebeest?

• The wildebeest population will increase.
• The wildebeest population will decrease.
• The wildebeest population will remain the same.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In a food chain, foxes are consumers of rabbits and mice. If the mice population suddenly decreases, what will most likely happen to the number of foxes?

• The number of foxes will increase because they will eat fewer rabbits.

• The number of foxes will stay the same because they will eat more rabbits.

• The number of foxes will decrease because they will be eaten by the rabbits.

• The number of foxes will decrease because they will only have one remaining food source.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4