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Social Science : Geography
IV. Answer the following in brief:
1. What is Biosphere?
• Biosphere the fourth sphere of the earth encompasses the Lithosphere, Hydrosphere and Atmosphere.
• From the ocean floor to the troposphere its vertical range is 20 km approx. Most plants and animals live.
2. What is an ecosystem?
• A Community of all living organisms is an "Ecosystem". All live and interact with me another and also with their non-living environment.
• Eco systems range in size from the smallest units to the global ecosystem or ecosphere.
3. What does the term 'Biodiversity' mean?
"Biodiversity" refers to a wide variety of living organisms, (plants, animals, organisms)
4. What is meant by loss of biodiversity?
loss of biodiversity
The extinction of (flora and fauna) due to human and natural influences is called "loss of biodiversity".
5. Mention the various terrestrial biomes.
• Tropical forest Biomes
• Tropical savanna Biomes
• Desert Biomes
• Temperature Grassland Biomes
• Tundra Biomes
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