What is an ecosystem?

• A group of only living things in an area.

• A community of living and nonliving things that interact in a particular environment.

• Only nonliving things in a specific place.

• A collection of animals that live together.

Which of the following are considered nonliving things in an ecosystem?

• Plants and animals

• Air, water, sunlight, and soil

• Insects and birds

• Trees and flowers

What does a food chain illustrate?

• How animals communicate with each other.

• How energy is passed from one living thing to another.

• The different types of ecosystems.

• The importance of nonliving things.

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What is the largest ecosystem on Earth?

• The Amazon rainforest

• The African savanna

• The marine ecosystem

• Yellowstone National Park