Which of the following is an example of an adaptation?a. In a vey wet year some plants grow unusually tall stalks and large leaves. b. over million of years, the eyes of cave salamanders lose their functions. c. An escaped dog joins a pack of wild dogs and begins interbreeding with them. d. A harsh winter kills many birds within population espacially the smallest ones.

B.) Over million of years, the eyes of cave salamanders lose their function is an example of adaptation  

Explanation:

Adaptation is an evolutionary process. Under this process an animal or plant evolves to become suitable to  live in a particular habitat. The organism undergoes many changes through natural selection, such changes takes place over generations. Although scientists were discussing adaptation before 1800s, it came to limelight only after the development of theory of natural selection by Alfred Russel and Charles Darwin.

Adaption can be of three types: Behavioral, Physiological and Structural

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.