REPEATER 2024 — BIOLOGY STD 12 Science — Question

Causes for loss of biodiversity:
(1) Habitat Loss and Fragmentation:
(i) Destruction of natural habitats and pollution create crises for wildlife.
(ii) Loss of habitats threatens migratory birds and animals needing large territories.
(2) Over-Exploitation:
(i) Human tendency to accumulate resources beyond needs leads to overexploitation.
(ii) Examples include the extinction of the dodo bird and passenger pigeon due to overuse.
(3) Alien Species Invasion:
(i) Introduction of new species can harm existing species and lead to local extinctions.
(ii) Examples include the Nile perch in Lake Victoria and African catfish in India.