1.If we recycle paper and plastic, we'll protect our environment.
2.If we stop cutting down forests, we will save the habitat of many animals.
3.If Jane turnes off all her lights when she goes out, she will save energy.
4.If the glaciers melt, sea levels will rise .
5.If everyone stops polluting the planet, the air will be cleaner.
6.If temperatures increase, lakes and rivers wil dry up.
7.If we plant tress, we will make the world a better and cleaner place.