Mosquitos are ...

Crocodiles are ...

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

Polar bears are ... species.

Heavy rains caused ... in many places.

The baby was frightened because of the ...

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

Car exhaust ... are bad for the environment.

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

... food is produced using fewer pesticides and other chemicals.

... means looking after animals in their natural environment.

Unfortunately, hundreds of species become ... each year.

Bamboo forest are the natural ... of the panda.

Global warming is a ... to animals who live in the Arctic, such as the polar bear.

Tigers are ... illegally because every part of their body can be sold.

Gas and petrol are ... fuels.

More and more ... panels are installed every year.

It is less expensive to build wind ... than before.

Wind power is a type of ... energy.