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

It destroys majority of the animal's habitats

The animals would get more food than before

The animals are safe and have found homes more easily

There is less pollution than before

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

The animals water supply evaporated because of heat over time

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

There would be less frogs in the pond

There would be more frogs in the pond

There would be more insects in the pond

More fish would move to the pond

In what ways can humans change an ecosystem?

By adding to the amount of pollution in an ecosystem

Raccoons eat aquatic animals. If chemicals entered the lake with rain water and destroyed the plants, how would this impact the raccoon population?

Raccoons would have less aquatic animals to eat

Raccoons would have more aquatic animals to eat

Raccoons would begin eating land plants.

If a meadow has too many rabbits, to help it become balanced...

needs more foxes that eat rabbits

Why did the United States establish national parks?

to preserve nature's beauty and habitats of plant and animals

to make money for the national government.

to provide Americans with great vacation spots

to give American a chance to see things they've never seen before.

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.

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

What does it mean when an organism is endangered?

They are in danger of completely dying out

What does deforestation mean

When humans cut down forest trees

When humans add poisons to the environment

When animals add poisons to the environment

When forests grow high and beautiful

Changes in Ecosystems

Authored by DINA THOMAS

Science

3rd - 5th Grade

NGSS covered

Used 17+ times

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26 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6. A squirrel makes a change to its environment when it —

climbs a tree

digs a hole to bury an acorn

collects acorns

jumps from tree to tree

Tags

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do scientist call organisms that are not native to an ecosystem and cause harm to native organisms?

native plants

invaders

invasive species

natural species

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following activities has a positive effect on the environment?

recycling

deforestation

pollution

Tags

NGSS.MS-ESS3-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

constructing highways

planting trees

recycling paper

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS3-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a certain population becomes so dense that it harms or changes the quality of life in that environment, we have...

a population

overpopulation

pollution

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is NOT an example of a natural environmental change?

a beaver dam

a hurricane

a volcanic eruption

a housing development

Tags

NGSS.MS-ESS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the last member of a species dies, the species becomes

extinct

endangered

threatened

dead

Tags

NGSS.MS-LS4-1

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Changes in Ecosystems

6. A squirrel makes a change to its environment when it —

What do scientist call organisms that are not native to an ecosystem and cause harm to native organisms?

Which of the following activities has a positive effect on the environment?

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

When a certain population becomes so dense that it harms or changes the quality of life in that environment, we have...

Which is NOT an example of a natural environmental change?

When the last member of a species dies, the species becomes

Which organism do the owl and the weasel compete for in the food web?

What is a drought?

What would cause a decrease in the rabbit population?

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