How Do Living and Nonliving How Do Living and Nonliving Things Interact?Things Interact?

EcosystemsEcosystems

A terrarium is a model of an ecosystem. Ecosystems include both living and nonliving things. The nonliving part of an ecosystem includes water, rocks, light, air, and soil. The living part of an ecosystem includes plants and animals. The study of how living and nonliving things interact is called ecology.

CommunityCommunity

The living part of an ecosystem is a community. Each ecosystem has its own community. A terrarium community can have small plants and animals. A desert community includes beautiful cacti and deadly scorpions.

PopulationsPopulations

Do you think the members of a community can be grouped further? Communities can be divided into different populations. A population is made of only one type of organism. A terrarium ecosystem may have populations of organisms such as snails and earthworms.

HabitatsHabitats

Each organism’s home is called its habitat. The soil is an earthworm’s habitat. A whale’s habitat is the ocean. A termite’s habitat is a termite nest.

communitycommunity

• The living part of an ecosystem.

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