While dolphins are known to be evil and aggressive, I noticed how its mostly talked about on Male dolphins... My question is that are Female dolphins evil? I also noticed how Female dolphins are victims of male dolphins so i'm curious if females are truly poor innocent dolphins being mistreated by their kind or just as bad as the males. (Of course if they are just as bad I'm not gonna say they deserve to be forced to have to do the "thing" with the males)

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.