some1 Ansr my qstn......
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answer 2.The Earth's atmosphere protects and sustains the planet's inhabitants by providing warmth and absorbing harmful solar rays. In addition to containing the oxygen and carbon dioxide, which living things need to survive, the atmosphere traps the sun's energy and wards off many of the dangers of space.
Answer 3. The sequence of organisms that feed on each other creates a food chain. So to maintain life on the biosphere, sequential consumption is necessary. Photosynthesis is the beginning of the food chain. ... This energy transfer is maintained throughout the system thus sustaining life.
Sorry i don't know thr first answer
Hope this will help you
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