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Karnataka Board PUCPUC Science 2nd PUC Class 12

What are the major causes of species losses in a geographical region?

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Question

What are the major causes of species losses in a geographical region?

Short Answer
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Solution

The major causes of species losses (also known as ‘The Evil Quartet’) are as follows:

  1. Habitat Loss and Fragmentation: Destruction of natural homes due to human activities (e.g., cutting forests).
  2. Over-exploitation: When human need turns into greed, leading to over-use of resources.
  3. Alien species invasions: Introduction of non-native species that threaten local species.
  4. Co-extinctions: Extinction of a species leading to the extinction of other species dependent on it.
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Chapter 15: Biodiversity and Its Conservation - NCERT EXERCISES WITH ANSWERS [Page 697]

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Nootan Biology [English] Class 12 ISC
Chapter 15 Biodiversity and Its Conservation
NCERT EXERCISES WITH ANSWERS | Q 5. | Page 697
NCERT Biology [English] Class 12
Chapter 13 Biodiversity and Conservation
EXERCISES | Q 5. | Page 227

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