Question

Of the following which is true regarding the biodiversity crisis?

A. Ecosystems services are the only benefit that conservation biology can provide.

B. Invasive species have been introduced but do not outcompete native species in a habitat.

C. Overharvesting can result in protection of species due to small population size.

D. Habitat loss is arguably the most effective piece of evidence supporting loss of biodiversity.

Answer 1

Ans. Option (D) is CORRECT.

Reason:- Though there are many factors which leads to biodiversity crisis,but habitat loss is the most important cause driving animals and plants to extinction.

e.g. In tropical rain forests which once
covering more than 14 per cent of the earth’s land surface, these rain forests now cover no more than 6 per cent.

The Amazon rain forest (it is so huge that it is called the ‘lungs of the planet’) harbouring probably millions of species is being cut and cleared for cultivating soya beans or for conversion to grasslands for raising
beef cattle. This unwise use of resources is causing extinction to huge number of species.Besides total loss, the degradation of many habitats by pollution also threatens the survival of many species.