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re dropped from the Endangered Species List, the bald eagle would still be a threatened species. That means the bird would continue to get the same protection. No hunting allowed, and no disturbing of nests. But bald eagles still face tough times. The destruction of their natural homes could be the next DDT causing eagle numbers to drop quickly.©ú 

Question 14: What was the main harmful effect of the pests killer DDT on bald eagles? 

Question 15: What measure did the wild life biologist take to increase the number of bald eagles? 

Question 16: According to the speaker, what is the possible danger facing bald eagles? 

Passage Three 

If the earth gets hotter in the new century, what will happen to animals and the plants which animals depend on for survival? The question offers another way of looking at the "Greenhouse Effect".©úPeople have talked about the general problem of "Global Warming" for some time. But they were usually worried about things like whether to buy a home on the coast. Biologists and other scientists turn their attention to plants and animals at an important meeting that took place last October. They were reviewed evidence that plants and animals are sensitive to climate. Since the Ice Age ended ten thousand years ago and warmer temperatures returned to the northern latitudes, many species have migrated north. If the predictions about the Greenhouse are correct, temperatures will rise by the same amount in the next one hundred years as they did in the past ten thousand. Will animals and plants be able to adapt that quickly to change in the environment? Many won't. Certain species will probably become very rare. Experts say plants under climate stress will be very open to disease and fire. Forest fires may become more common. That, in turn, man harm animals that depend on the trees for food will for shelter. Any preserves we set up to protect endangered species may become useless as the species are forced to migrate along with their natural homes. Change is a part of life, but rapid change, says scientist George Woodwell, is the enemy of life. 

Question 17: What is the concern of ordinary people about the "Greenhouse Effect"?©ú
Question 18: What has happened since the end of the ICE AGE?©ú

Question 19: What will be a possible threat to plants in the future?©ú 

Question 20: According to the passage, what will probably happen to the endangered species?

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