Energy in Ecosystems

These break down dead plants and animals and put nutrients in the soil.

• producer

• consumer

• decomposer

• herbivore

Which of these are a decomposer?

• coyote

• bacteria

• frog

• bird

A rock is an example of what in an ecosystem

• abiotic factor

• biotic factor

• consumer

• decomposer

In a food chain what does the arrows represent?

• oxygen

• air flow

• energy

• sunlight moving

A food chain shows how ___________ flows through an ecosystem?

• food

• energy

• water

• oxygen

Which of these is most likely an herbivore?

• cow

• tiger

• human

• algae

Hawks are a predator in the forest ecosystem, mice are their prey. If the number of hawks go down in the ecosystem, what will happen to the number of mice?

• It will decrease.

• It will increase.

• It will stay the same.

Where do producers get their energy from?

• oxygen

• sunlight

• rain

• carbon dioxide

Which is an example of competition in an ecosystem?

• Giraffes eat leaves off trees.

• Coyotes hunt rabbits for food.

• Frogs eat flies, and water snakes eat frogs

• Polar bears and killer whales both hunt seals for food.

Which is not a consumer?

• herbivore

• carnivore

• omnivore

• producer