Revision/Conditional I/ Nature protection

Many wildlife habitats will be destroyed if people ... polluting the environment.

If we dump all sorts of chemicals into rivers, we ... swim in them in future.

If we... cutting down so many trees, we will endanger our oxygen supply.

Soon the Earth's resources will be exhausted if the human population ... to grow.

If everybody continues to use aerosols and CFCs, the hole in the ozone layer ... bigger.

If the sun radiation can't escape into space, the Earth's temperature ... steadily.

If the global temperature ... , sea levels ... too.

We'll threaten our own existence if we ... our waste rapidly.

People will run out of drinking water one day if they ... it more rationally.

If he ... to help the planet, then he will have to change his habits.

Choose the right pictures.

Environmentaly friendly are:

renewable energy, overpopulation, hybrid cars, deforestation, reuse, recycling?

Choose the right pictures.

Environmental problems are:

global warming, deforestation, renewable energy, air pollution, recycling, overpopulation