NEET BIOLOGY

ECOLOGY

BIODIVERSITY AND ITS CONSERVATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
By far, the biggest cause of biodiversity loss today is
A
climate change.
B
over-harvesting.
C
habitat change and fragmentation.
D
pollution.
Explanation: 

Detailed explanation-1: -Habitat: habitat loss is the major cause of loss of biodiversity, which is caused by human activities either destroying or changing natural habitats. Overpopulation has led to more and more habitats being degrade in order to accommodate human activities like agriculture, which is needed to support the human population.

Detailed explanation-2: -The main direct cause of biodiversity loss is land use change (primarily for large-scale food production) which drives an estimated 30% of biodiversity decline globally. Second is overexploitation (overfishing, overhunting and overharvesting) for things like food, medicines and timber which drives around 20%.

Detailed explanation-3: -These fragments of habitat may not be large or connected enough to support species that need a large territory where they can find mates and food. The loss and fragmentation of habitats makes it difficult for migratory species to find places to rest and feed along their migration routes.

Detailed explanation-4: -Habitat loss is a consequence of human activities such as agriculture, urbanization, deforestation, resource extraction, alteration of the sea-floor due to trawling (fishing), or the release of pollutants.

Detailed explanation-5: -Habitat loss has significant, consistently negative effects on biodiversity. Habitat loss negatively influences biodiversity directly through its impact on species abundance, genetic diversity, species richness, species distribution, and also indirectly.

There is 1 question to complete.