James was walking down the road when a large animal jumped out in front of him. james was startled and experienced a fast heart rate and heavy breathing. which statement best describes james’s condition in such a situation? a. the adrenal gland secreted aldosterone, increasing sodium absorption, which increased the heart rate and breathing. b. the adrenal gland secreted epinephrine, increasing blood pressure, which increased the heart rate and breathing. c. the adrenal gland secreted androgens, stimulating calcium absorption, which increased the heart rate and breathing. d. the adrenal gland secreted cortisol, increasing glucose absorption, which increased the heart rate and breathing.

Answer B is correctly correct

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:

multiplying and dividing the two decimals and the eqations by the same number of the overalls