Which of the following describes surface tension in water? Choose 1
Choose 1

(Choice A)
A
Surface tension occurs due to ionic bonding.

(Choice B)
B
Surface tension is caused by water molecules repelling one another.

(Choice C)
C
Surface tension allows water to support small objects if they are placed carefully on its surface.

(Choice D)
D
Surface tension of water is weakened by hydrogen bonding.

C

Explanation:

Small objects usually do not permeate the surface of the water due to its high tension. The covalent bonding of water allows for its unique ability of high surface tension.

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:

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation: