What is the first step in the carbon cycle? A. Respiration B. Photosynthesis C. Combustion D. Decomposition 相关知识点: 试题来源: 解析 B。解析:在碳循环中,第一步是光合作用。植物通过光合作用从大气中吸收二氧化碳,这是碳进入生物群落的开始。呼吸作用是碳返回大气的途径之一,选项A错误。燃烧是碳释放...
The Silk Road spirit is consistent with the ideal of “all states joining together in harmony and peace” long upheld by the Chinese nation, with the Chinese people’s principles of amity, good neighborliness and “helping others to succeed while seeking our own success”, and with the call ...
The Cori cycle is the linked metabolic pathways by which muscles remain capable of functioning, even when they don't have oxygen...
The carbon burning process is a nuclear reaction that happens in the core of massive stars under conditions of tremendous temperature and pressure. Carbon burning only initiates near the end of a star's life. For a star to eventually build up enough pressure in its core to initiate carbon ...
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Another process, called denitrification, returns nitrogen gas to the atmosphere. Again, this is performed by bacteria, which reduce nitrates in the soil to nitrogen. Human beings have had a significant impact on the nitrogen cycle. Since nitrates are very soluble in water, they can be rapidly ...
THE NATURALIST: Take in oxygen; Give back a little carbon dioxide - what a perfect cycleKathleen Kudlinski
braindoesmoreexercise,itgetshealthierandworksbetter.Thisiswhystudentsareencouraged todomindexercisesorplaymind-relatedgamesregularly. 4 Itallowsgoodbloodcirculation(循环)inthebodyandenablesthemindtoprocess presentaswellaspastinformationquickly.However,manypeopleneglecttheimportanceofdoing so.Also,alwaysincludehealthyfo...
Living organisms return carbon back to the atmosphere in the form of CO2 through which process? What does aerobic fitness mean? What are the identifying characteristics of the Ecological System Theory? What is the easiest way to diagram a sentence?
A molecule of water is formed when one atom of oxygen bonds with two atoms of hydrogen, making H2 O. Answer and Explanation: 1 Become a Study.com member to unlock this answer! Create your account View this answer The water cycle is the process by which water moves from the earth ...