The answer is b. is under purifying selection
Because in the dark only the rods are the working part in your eyes and they only detect dark colors or purple to be specific
Biogeographic isolation refers to the separation of the members of the similar species, or a group of organisms, which breed and generate offspring that can further give rise to young ones.
The separation can be achieved by the geographical forces like oceans, rivers, and mountains, and by the biological forces, like hunting times, and spring or fall mating.
Response would be correct, as in response to environment.
A balance of this two process must be maintained in order to attain a constant earth temperature.
<h3>
Energy flow in the earth</h3>
The earth in itself is a massive ecosystem. Energy flows into the earth and out of it. The only source of energy input to the earth is the sun. Also, energy is lost from the earth via re-radiation of energy in the form of infrared rays.
However, this inflow and out flow of energy affects the temperature of the earth. A balance of this two process must be maintained in order to attain a constant earth temperature.
Learn more about ecosystem: brainly.com/question/1673533
