Fossil fuels, such as coal, oil and natural gas, are created when organic matter decays and becomes compressed beneath layer upon layer of sand, earth, rock and ocean. Interestingly, the name “fossil fuel” is actually derived from the word “fossil”: the mineralised remai...
根据前文 “Their iron-rich excrement creates the perfect growing conditions for phytoplankton.(它 们富含铁的排泄物为浮游植物创造了完美的生长条件)”可知,划线词所在句中的主语These creatures指的 是浮游植物,再根据后文 “but, taken together, they have a great influence on the planet's atmosph...
___相关知识点: 试题来源: 解析 "Capital" here is .fossil .fuels and mineral deposits, and also .fertile soils, groundwater and other species. "Income" here is the sun's energy -- and what this creates.反馈 收藏
It's in fact the burning of what we call "fossil carbon" that creates the imbalance: fossil fuels, coal, oil, natural gas. These substances are all mined. We have to dig them up or drill a well to release them. And this is carbon that was in the atmosphere millions of years ago....
The bulk of air pollution comes from the burning of fossil fuels. Hence with a decline in the number of passenger cars, air confirmation will decline considerably. The authorities need to promote electric cars by providing subsidies through various schemes. This practice will definitely decline pollu...
A fuel cell,very simply described,is a power generator,making electricity through the combination of hydrogen and oxygen.Fuel cells generate electrical power quietly and efficiently,without pollution,Unlike power sources that use fossil fuels,the only by-products from an operating fuel cell are heat ...
Well, turns out it’s the source of the carbon being burned that's the key.It's in fact the burning of what we call fossil carbon that creates the imbalance—fossil fuels—coal, oil, natural gas. These substances are all mined;we have to dig 'em up, or drill a well to release ...
63.C细节理解题.根据第三段Fuel cells generate electrical power quietly and efficiently,without pollution,Unlike power sources that use fossil fuels,the only by-products from an operating fuel cell are heat and water.可知利用"fuel cell"发电,没有噪音,效能高,没有污染.所以使用"fuel cell"的汽车比...
This creates hydrocarbons, the source of energy in fossil fuels – but without any emissions if the fuels are made using clean electricity. These fuels take up more space than an energetically equivalent amount of gasoline – an obstacle to using them in cars. Another approach is to make ...
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