Matter moves from producers to consumers and to decomposers. Which of the following is true?

• A. Matter can move only from plant to plant in an ecosystem.

• B. Matter cycles only when sunlight is available.

• C. Cycling of matter is constantly occurring in every ecosystem.

• D. Only animals can cause matter to cycle through an ecosystem.

Which natural matter can be recycled by living organisms in an ecosystem?

• A. aluminum foil

• B. glass bottles

• C. plastic wrap

• D. bird carcasses

Which of the following is true of consumers?

• A. Consumers cannot make their own food.

• B. Some consumers can use producers as food.

• C. Some consumers can use other consumers as food.

• D. all of these

The Sun provides energy. Plants use the energy to make food. How do animals get energy?

• A. All animals get energy by hibernating.

• B. Animals absorb the Sun's energy and make their own food.

• C. Animals get energy by eating the plants.

• D. Animals do not need energy.

An organism that makes its own food is known as a _______.

• A. producer

• B. decomposer

• C. consumer

• D. carnivore

Producers are usually the first organisms listed in a food chain. They provide energy to the other organisms in the food chain. Producers get energy from _______.

• A. water

• B. the Sun

• C. eating animals

• D. eating plants

Which correctly shows how energy cycles in an ecosystem?

• A. Producers ->Decomposers-> Consumers-> Sun

• B. Sun->Producers->Consumers->Decomposers

• C. Decomposers->Sun->Consumers->Producers

• D. Consumers->Sun->Producers->Decomposers

An ________ is all the living and nonliving things that exist and interact in one place.

• A. abiotic

• B. biotic

• C. ecosystem

• D. decomposer

In an ecosystem, every living thing has a specific ______ .

• A. role

• B. plant

• C. animal

• D. obstacle

________ play the role of decomposers.

• A. earthworms

• B. rats

• C. water

• D. plants