The theory of states that organisms that are better suited for their environment will survive and reproduce

The theory of natural selection states that organisms that are better suited for their environment will survive and reproduce.

Explanation:

This theory of natural selection is proposed by the Charles Darwin. He states that nature has its own way of selection and those who survives are suited to environment. This theory is also known as the survival for the fittest.

So only the environment suited creature continues his/her journey of life and can pass its gene to future generations. It is the natural and continuous process.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).