Which of the following statements best explains why genetic variation is important to the survival of a population? A. Genetic variation decreases gene flow in the population.
B. Genetic variation decrease the likelihood of genetic mutation.
C. Genetic variation increases the size of animals so that more offspring will be produced.
D.. Genetic variation increases the likelihood of an allele being present that is best suited for
the environment.

The answer is as follows in the photo

B? i think so but hope that's right and answers your question

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.

Answerit is comparative because this experiment is comparing the results of the volume at minimal pressure and then increases it; ; ;