Define the term variation as it relates to living organisms.

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Moving down the ramp from 6 meters to