Question

what will happen if organisms doesn't adapt to their habitat

Answer 1

This means adapting to be able to survive the climatic conditions of the ecosystem, predators, and other species that compete for the same food and space. An adaptation is a modification or change in the organism's body or behaviour that helps it to survive. ... An animal may adapt to its habitat in different ways.

Answer 2

if the animals doesn't adapt to their habitat it will directly or in directly lead to the death of the animal ( according to Darwin's theory :: the survival of fittest )