U7-Q1

___ is caused by an increase in greenhouse gases like carbon dioxide.

• Global warming

• Habitat

• Valuable

Overfishing can put many kinds of fish at risk of ___.

• extinction

• ecosystem

• marine life

Recycling is a simple way to ___ natural resources and energy.

• harm

• protect

• absorb

Many ___ are losing their homes because of deforestation.

• wildlife

• corals

• carbon footprints

The forest is a ___ resource that must be used wisely.

• single-use

• valuable

• endangered

Many types of ___, like turtles and dolphins, are found in the ocean.

• dugongs

• marine life

• habitats

Factories often ___ harmful chemicals into rivers, causing pollution.

• dump

• cut down

• protect

Corals provide food and shelter for ___ marine species.

• diverse

• endangered

• medicinal

Sea cows, also called ___, are gentle marine animals that are now endangered.

• dugongs

• corals

• habitats

If we continue to ___ trees at this rate, forests will disappear.

• absorb

• cut down

• dump