Number of wild life is continuously decreasing. What is the main reason of this : -
A
Predation
B
Cutting down of forest
C
Destruction of habitat
D
Hunting
The answer is C.
Solution
The main causes of loss of biodiversity are habitat loss and fragmentation, over-exploitation, alien species invasions and co-extinctions (the 'evil quartet'). Habitat loss and fragmentation is the most important cause. When forests are cleared for agriculture, industry and settlements, or wetlands are drained, the animals and plants living there lose their homes, food and breeding grounds. Cutting down forests is one form of habitat destruction; hunting and predation affect fewer species. So the main reason for the decrease in wildlife is destruction of habitat.
ConceptHabitat loss as main cause
Biodiversity and Conservation in past papers
95 questions from this chapter have appeared across 25 exam years.
