Which of the following is a physiological adaptation?
a. group hunting
b. hyoid bone adapted for roaring
c. dark coloration
d. migration

The right option is b. hyoid bone adapted for roaring

A physiological adaptation is the adjustment and the regulation of an organism’s internal body functions in order to cope with its changing environment. A physiological adaptation is also an organism’s response to a certain external stimulus in order to maintain homeostasis. Hyoid bone adapted for roaring and the production of venom by snakes to avoid predators are examples of physiological adaptation.

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:

it is a learned trait

explanation: