Social Science : Geography
BIOSPHERE
IV. Answer the
following in brief:
1. What is Biosphere?
Bioshphere:
• 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?
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:
"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.
Terrestrial Biomes
• Tropical forest Biomes
• Tropical savanna Biomes
• Desert Biomes
• Temperature Grassland Biomes
• Tundra Biomes
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