Question

Define biosphere in detail?​

Answer 1

Answer:

The biosphere, (from Greek bios = life, sphaira, sphere) is the layer of the planet Earth where life exists. ... The biosphere is one of the four layers that surround the Earth along with the lithosphere (rock), hydrosphere (water) and atmosphere (air) and it is the sum of all the ecosystems.Generally defined, the portion of the universe where all life is found is called the biosphere. Since scientists have not found organisms beyond planet Earth, the biosphere is defined as the parts of Earth where life exists. The biosphere is made of three parts, called the lithosphere, atmosphere and hydrosphere.With the prefix 'life,' this means that Earth's biosphere is composed of all of the living organisms on the planet. This includes all of the plants, animals, bacteria, fungi and single-celled organisms found on Earth. Most of this life exists no deeper than about 10 feet into the ground or about 600 feet above it.

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Answer 2

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The biosphere, (from Greek bios = life, sphaira, sphere) is the layer of the planet Earth where life exists. This layer ranges from heights of up to ten kilometres above sea level, used by some birds in flight, to depths of the ocean such as the Puerto Rico trench, at more than 8 kilometres deep. These are the extremes; however, in general the layer of the Earth containing life is thin: the upper atmosphere has little oxygen and very low temperatures, while ocean depths greater than 1000 m are dark and cold. In fact, it has been said that the biosphere is like the peel in relation to the size of an apple.

The development of the term is attributed to the English geologist Eduard Suess (1831-1914) and the Russian physicist Vladimir I. Vernadsky (1863-1945). The biosphere is one of the four layers that surround the Earth along with the lithosphere (rock), hydrosphere (water) and atmosphere (air) and it is the sum of all the ecosystems.

The biosphere is unique. So far there has been no existence of life elsewhere in the universe. Life on Earth depends on the sun. Energy, provided as sun light, is captured by plants, some bacteria and protists, in the marvellous phenomenon of photosynthesis. The captured energy transforms carbon dioxide into organic compounds such as sugars and produces oxygen. The vast majority of species of animals, fungi, parasitic plants and many bacteria depend directly or indirectly on photosynthesis.