Shawn sells 36 vehicles in 4 weeks. Brett sells 56 vehicles in 7 weeks. Who sells more vehicles per week?

Shawn sells more at a rate of 9 vehicles per week

Explanation:

Shawn sells 36 vehicles in 4 weeks.

Thus, her selling rate per week = Number of vehicles sold / Number of weeks

Selling rate = 36/4 = 9

While Brett sells 56 vehicles in 7 weeks.

Selling rate = 56 / 7 = 8 vehicles per week

So since, Shawn 9 vehicles per week while

Brett sells 8 vehicles per week, we can say Shawn sells more vehicles in a week

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: