A population of grasshoppers in the Kansas prairie has two color phenotypes, green and brown. Typically, the prairie receives adequate water to maintain healthy, green grass. Assume a bird that eats grasshoppers moves into the prairie. How will this affect natural selection of the grasshoppers?

The survival rate of green grasshopper increases and the brown grasshopper decreases

Explanation:

Natural selection is the mechanism which drives the process of the evolution of species.  The natural selection process puts pressure on the species which allows the organism to adapt in the organism and then nature selects the species which are best adapted to the survival.

The adapted trait if increases the survival rate in the environment is passed on to the generation and if not then decreases.

In the given question, when the green grass prairie increases then the green grasshoppers will have an advantage that they can hide themselves and the green color trait increases the survival rate but the brown color increases the chances of predator feeding and is not passed on to the offsprings.

the correct option is option a