The earth's biosphere (the surface layer of the planet and the surrounding atmosphere) provides the land, air, water, and energy necessary to sustain life. This life-support system is a complex, interdependent one in which energy from the sun is changed into food for humans. The entire syst...
The passage says that the biosphere___. A. extends only 1,200 feet below the earth’s surface B. is about seven miles in width C. is as much as twenty-five miles in thickness D. is a zone only about one hundred feet wide 相关...
According to the passage, the "biosphere" is the layer on earth's surface ___. A. B. C. D 相关知识点: 试题来源: 解析 C 该题您未回答:х 该问题分值: 1 答案:C “The biosphere is…this planet that is inhabitable by living organisms.”表明“生物圈指地球上生物可生存的表层”...
The atmosphere provides the gasses (nitrogen, oxygen, and carbon dioxide) needed by living things. The atmosphere also provides the screen from the sun’s UV radiation and helps us receive just enough of the sun’s heat. It is believed that the biosphere is exclusive to earth alone. Scientis...
Schopf, W
The Proterozoic Biosphere is the first major study of the paleobiology of the Proterozoic Earth. It is a multidisciplinary work dealing with the evolution of the Earth, the environment, and life during the forty percent of Earth's histo... J. William Schopf - The Proterozoic Biosphere 被引量...
Breckle, S.-W.: Walter's Vegetation of the Earth. The Ecological Systems of the Geo-Biosphere WALTER H. Vegetation of the earth, and ecological system of the geo-biosphere (2nd)[J].New York:Springer-Verlag,1979.Walter H, Breckle S (2002) Walter's vegetation of the earth: the ecologica...
Life on Earth has existed for over 3.5 billion years and has caused fundamental changes in Earth’s biogeochemistry. However, the timing and impact of major events in the evolution of the biosphere are hotly contested, owing partially to the inherent dif
8. How many species are there on Earth? 8.地球上有多少物种? 9. How do organisms evolve? 9.有机体是如何进化的? 10. Why did dinosaurs grow to be so big? 10.为什么恐龙长得如此之大? 11. Did ancient humans interbreed with other human-like ancestors?
Addu Atoll, the site of Shaiz’s hotel, is about two hours south of Malé by aeroplane. Its rich coral reefs support more than 1,200 species of fish — one of the factors that led the United Nations cultural organization UNESCO to include the atoll in its World Network of Biosphere Rese...