Question

Read the section “Gaining Biodiversity.” Describe geographical isolation and competition. (Site 2)

Answer 1

Answer:

Geographic isolation is the term that is used to describe the population of the animals and other organisms that are separated from exchanging their genetic material with other organisms of the same species. it is a result of coincidence or of an accident.

It is a common way by which the speciation begins and because of speciation, there is the evolution in the organism living in that particular environment.

Answer 2

Globally, diversity naturally has increased over time, though the great mass extinctions have decreased it for a while. The most famous of the mass extinctions is the one that claimed the dinosaurs, but we are currently in the midst of a human-created mass extinction. Local diversity, on the other hand, is constantly increasing and decreasing at very short time scales. There are many factors that affect diversity, and the major natural circumstances are given here. Human-generated impacts on diversity have almost always been negative, and are covered in the Conservation Issues section.