Because molecules will move from one side to another to come to an equilibrium, or balance of concentration, the moves from side B to side A, so the water level on side A goes .

Water, up

Explanation:

In the process of movement water in the diffusion of water the net movement of water goes from higher concentration to the low concentration area. The movement of water  move form one side to other side until it reaches an equilibrium and the level of water on the other side goes up.

Hence, the water molecule will move from from side B to side A until it reaches equilibrium and the water level on side A goes up.

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:

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