Biotic and Abiotic Factors in Ecosystems

Biotic and Abiotic Factors

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Ecosystems are made of biotic and abiotic factors.

An ecosystem is a community of living and non living things in an environment.

Biotic Factors

Biotic Factors are living things.

Plants, animals, and bacteria are all biotic.

Multiple Select

In this picture, what are two biotic (living) factors?

• wolf

• tree

• sun

The wolf, cat, mouse, lizard, spider, tree, and grass are all biotic factors because they are living.

There are many biotic factors in this ecosystem. Fish, turtles, birds, trees, and plants are all biotic factors.

Multiple Choice

What is one biotic factor from the last slide?

• Rocks

• Fish

• Clouds

Abiotic Factors

Abiotic factors are not living. They are things like rocks, clouds, water, sunlight, and temperature.

In this picture, the rock and the soil are abiotic factors. They are not alive.

Multiple Choice

What is an abiotic factor?

• It is not alive

• It is alive

Abiotic factors in this picture are water, clouds, and sand. They are not living.

Multiple Select

Which two things from the last slide are abiotic factors?

• water

• birds

• clouds

Poll

I understand biotic and abiotic factors.

• YES

• NO