Matter in Ecosystems

Energy and other materials from dead organisms are recycled back into the soil by

• producers

• consumers

• decomposers

• nonrenewable resources

_____________ make their own food using energy from the sun.

• fungi

• animals

• plants

• air

Animals are...

• producers

• consumers

• plants

• decomposers

__________ break down decaying material in an ecosystem.

• consumers

• producers

• decomposers

• carnivores

Organisms that are eaten by other animals are called...

• producers

• consumers

• predators

• prey

A hawk and a mouse are in a grassland environment. Which would be the predator?

• hawk

• mouse

• grass

• tree

The job of decomposers is to break down dead plants and animals into useful substances. This job is their...

• niche

• ecosystem

• habitat

• adaptation

A ____________ eats animals for energy.

• producer

• decomposer

• prey

• consumer

Which of the following is NOT an abiotic factor?

• hawk

• rock

• air

• rain

Which is not a biotic factor?

• rock

• fungi

• tree

• mouse