<em>The theory of </em><u><em>natural selection</em></u><em> states that organisms that are better suited for their environment will survive and reproduce.</em>
<u>Explanation:</u>
This hypothesis of characteristic choice is proposed by Charles Darwin. <em>He expresses that nature has its own specific manner of choice and the individuals who endure are fit to the earth. </em>
<em>This hypothesis is otherwise called the endurance for the fittest. </em>
So just the earth fit animal proceeds with his/her voyage of life and can pass its quality to who and what is to come.<em> It is a characteristic and nonstop procedure.</em>
An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion (see page 10 for more on ions).
