What is biodiversity? Explain four reasons for loss of its in recent
times?
[5M
Answers
Answer:-
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biodiversity
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Biodiversity is the biological variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
CAUSES OF BIODIVERSITY LOSS
- Climate change.
- Pollution.
- Destruction of habitats.
- Invasive alien species.
- Overexploitation of the natural environment.
- Extinction of species.
- Threat to human beings.
- Proliferation of pests.
Answer:
Biodiversity:-
Biodiversity is the biological variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
Explanation:
Cause #1 Destruction of Habitat:
The natural habitat may be destroyed by man for his settlement, agriculture, mining, industries, highway construction, dam building etc.
Cause #2 Hunting:
Wild animals are hunted for the commercial utilization of their products such as hides and skin, tusk, fur, meat, pharmaceuticals, cosmetics, perfumes and decoration purposes. In Africa, in recent years 95% of the black rhino population have been exterminated in Africa by poachers for their horn. Today, rhino horn fetches more than $15,000 in the pharmaceutical market.
Cause #3 Exploitation of Selected Species:
Exploitation of medicinally important plants has resulted in their disappearance from many of their natural habitat. The pitcher plants, Nepenthes khasiana, Drosera sp., Gnetum sp., Psilotum sp. Isoetes sp. are ruthlessly sought and collected for teaching and laboratory work.
Cause #4 Habitat Fragmentation:
Habitat fragmentation may be defined as an “unnatural detaching or separation of expansive tracts of habitats into spatially segregated fragments” that are too limited to maintain their different species for an infinite future.