The temperature of the earth surface ...... day by day.

We mustn't use .......... .They pollute rivers, lakes and seas.

We should use ........... to prevent air pollution.

We have to take ...... to save energy sources.

Efficient=Yeterli, etkili,verimli

You should .............. paper,glass,plastic and metal.

Don't throw your rubbish around. ................... them.

A:What should we do to protect the environment?

B: We should.......................................

Turn off the lights= Switch off the lights= Işıkları kapatmak

Don't pollute the water sources = Su kaynaklarını kirletmelisin.

Be responsible for the nature= Doğaya karşı sorumlu olmak

A:How can we ................. water?

B: Turn off the tap while washing your hands.

Solar energy and wind energy are kinds of .............. energy.