The observation that deals more with senses instead of graphs and data.
Water makes up 90% of the body.
The layer of the sun is in three equally side the sun the moon and the galaxy
Answer:
Natural selection
Explanation:
Natural selection occurs when one allele (or combination of alleles of different genes) makes an organism more or less fit, that it is able to survive and reproduce in a given environment. If an allele reduces fitness, its frequency will tend to drop from one generation to the next.
