举一反三
- Acid rain is not straightforwardly _____ to the burning of coal. A: contributes B: contributory C: attributes D: attributable
- Linolenic acid is abundant in:</p></p>
- Sulphur dioxide (二氧化硫 ) from the use of coal and oil causes much acid rain, nitrous oxide (氧化氮) which erode our ozone layer.
- The concentration of carbon dioxide is caused by_______. A: the heat accumulated in the atmosphere B: the burning of coal C: the wide use of renewable energy D: the destruction of the tropical rain forest
- The Amino Acid Score is defined as:</p></p>
内容
- 0
Other emissions: Sulphur dioxide causes acid rain, nitrous oxide erodes the ozone layer. Both of these, mostly from coal and oil, we control 5) ____________.
- 1
Coal can be converted （） gas by burning
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A. DHA is highly abundant in the membranes of the retina (photoreceptor cells)</p></p><p><p>B. Arachidonic acid is used to make prostaglandins</p></p>
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Which of the following is NOT true? A: Acid rain also damages buildings and railway railings. B: Acid rain kills plants and water animals but is not really harmful to humans. C: Acid rain may attack the regions where it is formed and other regions as well. D: Smoke from factories and power-stations in the USA is the main cause of acid rain in Canada.
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_____________ is the process of extracting coal from the ground. A: Overfishing B: Overconsumption C: Coal mining D: Burning of fossil energy sources