Biomass comes from plants which are results of photosynthesis powered by the sun. In essence, wind, biomass and hydropower are all secondary forms of solar energy (Timmons et al., 2014). Sign in to download full-size image Fig. 12. Classification of various renewable energy sources.Source: ...
Common water plant could provide a green energy source. Scientists have figured out how to get large amounts of oil from duckweed, one of nature’s fastest-growing water plants. Transferring such plant oil into biodiesel (生物柴油) for transportation and heating could be a big part of a more...
plants C. animals D. decomposers 相关知识点: 试题来源: 解析 A。解析:在森林生态系统中,所有生物的主要能量来源是太阳。植物通过光合作用将太阳能转化为化学能,然后沿着食物链传递。选项B植物是生产者,它们将太阳能转化为化学能,但不是能量的最初来源。选项C动物是消费者,它们依赖植物或其他动物获取能量。选项...
"I would like to thank Chinese enterprises for investing in hydropower plants, a source of clean energy, in Cambodia," he said in a speech during the river closing ceremony for the construction of the hydropower station in Thmar Baing district. "Chinese-built hydropower plants have helped secur...
coal was made by the rocks pressing on trees and plants which died millions of years ago. those trees and plants grew with the aid of sunlight, from which they made carbohydrates⑤, in this way changing the sun's energy into chemical energy. when we burn coal, some of this energy is ...
Table 1.Present sources of energy averaged over the earth SourceEnergy (cal cm−2yr−1)* Total radiation from the sun260,000 1.Highly Ionizing Radiation: Cosmic Rays0.0015 Radioactivity (to 1.0 km depth)0.8 Solar Wind0.2 2.Thermal Quenching: ...
The largest part of the energy from the sun is ___.[ ]A.stored by the current season's plantsB.turned into fuelC.absorbed by the earth's atmosphereD.used for electric power(5)Of the sun's entire output of radiant energy, the earth receives ___.[ ]A.nearly ...
2.The energy results from a loss in mass of the nuclide during its transformation.这种能量来源于核素在蜕变时质量的损失。 3.Soar thermal power and fuel cells may provide good source of power for desalination plants.太阳热能量与燃料电池可能为去盐工厂提供好的能量来源。 4.Electric current used or...
Scientists are exploring ways that they could be used as a power source for nearly exhaust-free automobiles and how they can be used as electricity-generating plants. The high cost of manufacturing fuel cells has prevented the mass use of this valuable energy source. I Ocean sources; Oceans, ...
. Because it is the main source of electricity now. . Because it is notrenewable.54. Where can we get biomass? . From natural gas. . From new trees. . From new crops. . From dead plants.55. How many kinds of green energy are mentioned in the passage? . 4. . 5. . 6. . 7...