How are new species evolved?

Explanation

1. Sexual reproduction and errors in DNA copying leads to variations in offspring in a population.
2. Organisms contain variations that help to adapt to its environment going to be survived more efficiently.
3 But in the same population, the organisms which contain the trait which may not help to adopt in its environment may be perished or eliminated slowly.
4. These small cahnges within the population due to variations is called micro evolution.
5. When organisms of the same species with variations are separated by some cause for long years, lot of variations may take place in theese years.
6. These accumulated variatios make them unable to mate and produce new offsprings.
7. Thus new species form and this is known as speciation or macro evolution.