The model shows the process of evolution at work in a population of aphids with varying amounts of pesticide resistance. Select ALL of the requirements for evolution to occur.
A)
Sexual reproduction must occur.
B)
The final population is purely random.
Genetic variation must exist in the population.
D)
Those with the highest pesticide resistance reproduced.
E)
Only those with the highest pesticide resistance level survived exposure to
the pesticide.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

b is the best answer for this question.