1. The greatest danger facing most endangered species is... Capture for the pet trade Hunting Habitat loss Disease

2. Which of the following is not listed as an endangered species under the U.S. Endangered Species Act? Cheetah Bald eagle Blue whale Hawaiian monk seal

3. The Bronx Zoo once had a picture frame covered by cloth. It was labelled 'The most dangerous species in the world'. If you removed the cover, you saw... A mountain lion A great white shark A mirror A virus

4. Which of the following substances is not biodegradable? Food refuse Paper Sawdust Styrofoam

5. What environmental problem is the result of chemical reactions in the atmosphere that involve sulfur? Smog Deforestation Acid rain Holes in the ozone layer

6. What chemicals have been banned in most of the world because of their role in destroying the ozone layer? Metal oxides DDT Chlorofluorocarbons Peroxides

7. Who wrote 'Silent Spring', the first book documenting many of the problems caused by pesticides? Aldo Leopold Henry David Thoreau Rachel Carson Jaques Cousteau

8. Which of the following is not a renewable resource? Timber Wild mushrooms Fish Gold

9. Which of the following practices produces the most organic water pollution? Recreational boating Intensive livestock farming Paper mills Humans bathing in the water

10. 'Ecology' comes from two Greek words meaning... Study of the world Study of the house Nature study Natural life