Ecosystem Review

Is wind a biotic or abiotic factor?

• biotic

• abiotic

Is soil a biotic or abiotic factor?

• biotic

• abiotic

Are rocks biotic or abiotic factors?

• biotic

• abiotic

Is bacteria a biotic or abiotic factor?

• biotic

• abiotic

Where does the food chain START?

• with consumers that eat grass

• with the sun giving energy to producers

• with the sun giving energy to consumers

• with consumers eating other consumers

 Animals that eat a variety of meats, fruits, and vegetables are

• producers

• Carnivores

• omnivores

• herbivores

What is the primary source of energy in all ecosystems?

• plants

• bacteria

• the sun

• producers

Energy in an ecosystem moves in a cycle

• True

• False

Organisms that live on land rarely compete for

• food

• water

• space

• oxygen

Check all abiotic conditions that might be found in a pond ecosystem

• temperature of the water

• dissolved oxygen in the water

• insect populations

• bacteria in the water

• dissolved nutrients in the water