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May 9, 2018 at 8:59 am

The biosphere is made up of all living things and their habitat. Life is usually confined to the atmospher,the land surface,the top layer of the soil,and the upper layers of the oceans, lakes and rivers. The existence of life in the upper atm0sphere depends on the supply of water as well as carbon dioxide. Few living things are found above 3 200 m. The upper limit for green plants is about 6 200 m in the himalayas. The few places on earth where life cann0t exist may be too cold, to hot,too dry.too pullute or to exposed to ionizing radi0n.