1.Several forms of pollution threaten the environment.
2. The local green group will clean up the beach next Saturday.
3. In ancient times, people worshiped a variety of gods.
4. We need to do more to save the environment.
5. Greenpeace is doing a lotto protect whales.
6. Archaeologists are not sure if the monument for survives long.
7. Conservationists are doing everything they can preserve thetemple.
8. A number of animal species face extinction unless we do something.