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1. Read the text. Fill in the gaps with one of the words from the box.
Rain, pollution, silt, logged, fields, aquatic, eliminate, streams, salmon
Erosion, the wearing away of topsoil by wind and _____, also contributes to water _____. Soil and _____ (a fine sediment) washed from _____ hillsides, flowed _____, or construction sites, can clog waterways and kill _____ vegetation. Even small amounts of silt can _____desirable fish species. For example, when logging removes the protective plant cover from hillsides, rain may wash soil and silt into _____, covering the gravel beds that trout or _____ use for spawning.
2.1 Read the text.
The marine fisheries supported by ocean ecosystems are an essential source of protein, particularly for people in developing countries; approximately 950 million people worldwide consume fish as their primary source of protein. Yet pollution in coastal bays, estuaries, and wetlands threatens fish stocks already depleted by over fishing. In 1989, 260,000 barrels of oil was spilled from the oil tanker into Alaska’s Prince William Sound, a pristine and rich fishing ground.
2.2 Put questions to the underlined words.
2.3 Translate the text in writing.
3. Topics for discussion:
1. Inefficient transportation of goods and passengers in your country.
2. The harmful influence of urbanization on the environment.
3. The way we can improve tourism in our country.
1. Read and translate text.
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