Question

What is Biosphere? (Topic: Biosphere)

Answer 1

The life-supporting zone of earth where the lithosphere, the hydrosphere and the atmosphere interact and make life possible and progressable is known as biosphere.

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Answer 2

Biosphere:

• The Biosphere is a 'sum of all ecosystems'. It is a 'closed system' and is also known as the 'zone of life'. It exists for 3.5 billion years.
• The biosphere is a layer where life 'exists on the ground' and also in the air. The other layers include the 'lithosphere, hydrosphere', and 'atmosphere' wherein the biosphere is unique.
• The biosphere is benefited due to the 'food web' as the nutrients of the remains of plants and animals that are dead are released into the soil which is then re-absorbed by the plants that are growing. So, this exchange of food and nutrients lets the Biosphere remain as a self-supporting system.