Biotic and Abiotic Factors

An ecosystem is made up of . . . 

• living (biotic) things and nonliving (abiotic) things.

• only living (biotic) things.

• only nonliving (abiotic) things.

Nonliving (abiotic) parts of an ecosystem are . . .

• air, soil and water.

• plants and animals.

A population is made up of . . . 

• one type of organism.  (Example: frogs)

• two or more types of organisms. (Example: Frogs and fish.)

What are the two groups of ecosystems?

• Land ecosystems and aquatic ecosystems

• Animal ecosystems and plant ecosystems.

Over time an ecosystem may undergo natural changes.  These changes may be caused by . . .

• humans building houses and animals building shelters. 

• sunshine and rain.

An ecosystem can be destroyed by ___________ ___________.

• natural disasters. 

• grocery stores.

• swimming pools.

• movie stars.

Why is it important to keep our ecosystems healthy?

• Because we (humans) and other organism depend on the resources from these ecosystems. 

• I don't know!