The city plans to build a highway extension next to a river. Which of the following should they do to make sure they have scientific knowledge to inform their decision?
Invite several gas and oil companies to build gas stations along the route
Request a budget increase to extend the project even more
Conduct a study of the river levels in different seasons to be sure the highway is out of the flood zone
Publish the highway plans for people to review

option c

Explanation:

i think conduct a study of the river levels in different seasons to be sure the highway is out of the flood zone

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:

b 04545