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

2. Which of the following is not listed as an endangered species under the U.S. Endangered Species Act? Bald eagle Blue whale Cheetah 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? Paper Food refuse Styrofoam Sawdust

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? Chlorofluorocarbons Peroxides DDT Metal oxides

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

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 Humans bathing in the water Paper mills Intensive livestock farming

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