Essay on plant growth and interference

Hormones are produced naturally by plants, while plant growth regulators are applied to plants by humans. Plant hormones and growth regulators are chemicals that affect:

Flowering.Aging.Root growth.Distortion and killing of organs.Prevention or promotion of stem elongation.Color enhancement of fruit.Prevention of leafing, leaf fall or both.Many other conditions.

Explanation:

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Plant hormones and growth regulators are chemicals that affect: Flowering. Aging. Root growth. Distortion and killing of organs. Prevention or promotion of stem

Explanation: yw

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:

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves