Scientists studying right whales off Canada’s east coast have discovered that whales are sending louder calls through the water to make themselves heard. Because they invest more energy in making calls, they have less energy available for finding food and mating. Other scientists measuring whale calls against background noise pollution have discovered that right whales have lost about eighty percent of their normal communication areas. This could seriously affect survival of this already threatened species.
Scientists don’t have badges and guns, but they are trying to correct the noise pollution problem. By tracking ships and marine mammals and understanding how noise travels, they are creating sound maps. They hope to get shipping lanes moved so that the noise pollution ships create will not overlap with areas most important to the whales. (300W)
1. What does the passage mainly talk about?
A. Whales are in danger because of the noise.
B. Noise pollution is affecting whales.
C. Natural noise is good for whales.
D. How to protect whales endangered.
2. The following statements are true EXCEPT .
A. you can call the police if you are disturbed by a noisy neighbor
B. low frequency noise has doubled off the Canadian coast every decade since the 1960s
C. noise pollution can prevent whales from contacting each other and from locating prey
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