Nature and enviroment

We should … old paper in order to save woods and forests on the planet.

If we don’t protect …, they will disappear forever. 

A lot of people will be thirsty if there isn’t enough … .

We ...... a lot of rubbish.

The population of the world is .....

People are ............ for the climate change that is happening.

Forests produce ...

Nowadays everyone should take care about the ......

Some wild animals now often come to towns and villages to look for .....

Complete the sentence using Conditional I:

If people....(recycle) old things , the world .... (get rid ) of garbage. 

Complete the sentence using Conditional I:

There ...... (be) so much pollution if we (use) bicycle and walk.

Complete the sentence using Conditional I:

If you (not switch off) the light when you're not in the rooom, you (not )save energy.