Page 11 - Science Course 3 (Book 1)

Mo1-L1a: What are Ecosystems?

Let’s Begin

What is an ecosystem?
An ecosystem is all the living things and
nonliving things in a given area.

Ecosystems on Earth include forests,
deserts, grasslands, rivers, beaches, and
coral reefs.

Ecosystems that have similar climates and
contain similar types of plants are grouped
together into biomes.

Key Concept Populations

What are Ecosystems? A habitat is the place within an ecosystem that
provides food, water, shelter, and other biotic and
How can you describe and ecosystem? abiotic factors an organism needs to survive and
reproduce.

Organisms have a variety of habitats.

When biotic or abiotic factors in an ecosystem
change, habitats can change or disappear.

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