A forested area contains deer, wolves, blue jays, squirrels, and many plant species including the staple diet of the deer. Alfalfa During the construction of a mall nearby, humans have changed the flow of water in the area, drying up a stream that feeds the
major patches of Alfalfa. What will likely happen in this environment?
1. The deer population will shrink
II. The wolf population will shrink
III. The blue jay population will increase
IV. The squirrel population will migrate to a new location
A. I and III
B. I, II and IV
C. Just IV
D. I and II

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:

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms