USA HISTORY

Detailed explanation-1: -This happens by the process of natural selection. By natural selection, the nature of the species gradually changes to become adapted to the niche. If a species becomes very well adapted to its environment, and if the environment does not change, species can exist for a very long time before they become extinct.

Detailed explanation-2: -Adaptations are unique characteristics that allow animals to survive in their environment. There are three types of adaptations: structural, physiological, and behavioral.

Detailed explanation-3: -An adaptation can also be behavioral, affecting the way an organism responds to its environment. An example of a structural adaptation is the way some plants have adapted to life in dry, hot deserts. Plants called succulents have adapted to this climate by storing water in their short, thick stems and leaves.

Detailed explanation-4: -These reversible changes are referred to as acclimatization. or acclimatory adjustment. It is useful to consider the different forms of acclimatization in terms of the length of time over which they can occur.