Nature and environment

- Which is the biggest land ... ? - The elephant.

• insect

• mammal

• reptile

Mosquitos are ...

• insects

• mammals

• reptiles

Crocodiles are ...

• insects

• mammals

• reptiles

She keeps a ... as a pet in her room.

• fly

• lizard

• owl

Polar bears are ... species.

• danger

• dangered

• endangered

Heavy rains caused ... in many places.

• ash

• flood

• wind

The baby was frightened because of the ...

• rain

• sunshine

• thunderstorm

... is when water and air are dirty and dangerous.

• flood

• mess

• pollution

Car exhaust ... are bad for the environment.

• airs

• fumes

• smokes

The ... effect is the warming of Earth's atmosphere because of harmful gases.

• glasshouse

• gardenhouse

• greenhouse