How do plants get and use energy?
(Lesson 1)

How do organisms interact in ecosystems?
(Lesson 2)
How do ecosystems change?
(Lesson 3)
How do humans impact ecosystems?
(Lesson 4)
100

The process that plants use to make sugar for food.

What is photosynthesis?

100

An organism that gets energy by breaking down wastes and dead organisms.

What is a decomposer?

100

Available supplies of food, water, sunlight, and space in an environment.

What are resources?

100

New plants and animals that people may bring into an ecosystem are...

What are nonnative species? 

200

The outside layer of cells on the top and bottom of a leaf.

What is the Epidermis tissue?

200

An organism that makes its own food for energy.

What is a producer?

200

The struggle of organisms for the same limited resources.

What is competition?

200

What is the most likely effect of bringing a nonnative species into an ecosystem?

A. It will provide resources needed by native species.

B. It will only use resources that are not needed by other species.

C. It will consume food and space that other organisms need.

C. It will consume food and space that other organisms need.

300

Earth's primary energy source.

What is the sun?

300

An organism that is eaten by another organism.

What is prey?

300

Which is an example of a slow change in an environment?

A. A river floods its banks.

B. A hurricane rips up trees.

C. A climate becomes drier.

C. A climate becomes drier.

300

An attempt to preserve or protect an environment from harmful changes.

What is conservation?

400

The process by which cells break down sugar to release energy.

What is cellular respiration?

400

An organism that cannot make its own food.

What is consumer?

400

All of the conditions surrounding an organism.

What is an environment?

400

Any substance that damages the environment.

What is pollution?

500

Carry food and water through the plant to all the other parts.

What are veins?

500

A consumer that hunts and eats another animal to get energy.

What is a predator?

500

TRUE/ FALSE

A forest fire help organisms in an environment by returning nutrients to the soil.

TRUE

500

Which is a way that people can help protect the environment?

A. Introduce new species into an ecosystem

B. Place limits on hunting and fishing

C. Dispose of paint products in landfills



B. Place limits on hunting and fishing

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