Review: Unit 3

Habitat is a place where a particular organism lives.

• TRUE

• FALSE

Food chains always start with animals.

• TRUE

• FALSE

Adaptations are special features of organisms that help them live in their habitat.

• TRUE

• FALSE

Producers eat plants or other animals because they cannot make food using sunlight.

• TRUE

• FALSE

Humans clear lands to grow crops. This destroys habitats and harms food chains.

• TRUE

• FALSE

All are lions' adaptations except _________.

• SHARP TEETH

• SHARP CLAWS

• STRONG MUSCULAR BODY

• GILLS AND FINS

Extinction happens because of these human activities EXCEPT ___________.

• DISEASES

• NATURAL DISASTERS

• PLANTING TREES

• CLIMATE CHANGE

All are examples of fossil fuels EXCEPT ___________.

• OIL

• GAS

• SUNLIGHT

• COAL

All are examples of greenhouse gases EXCEPT ___________.

• CARBON DIOXIDE

• OZONE

• CFCs

• OXYGEN

Acid rain is caused by __________ and nitrogen oxide.

• OZONE

• SULFUR DIOXIDE

• CARBON DIOXIDE

• OXYGEN