The answer to this question is "to put the two groups into the different environment" as a scientist separates a population of fruit flies into two groups and this would increase the rate of speciation in this population. This is the best solution that the scientist could do to increase the rate and get a more reliable result and observations.
Answer:
H20 and light ( last choice)
Explanation:
The law of supply is the microeconomic law that states that, all other factors being equal, as the price of a good or service increases, the quantity of goods or services that suppliers offer will increase, and vice versa.
