The answer is descent with modification. Descent with modification practically means that a species have changed appearance wise over long periods of time to adapt to their environments better.
Darwin proposed the phrase "descent with modification" to explain that evolution of new species occurs when existing species accumulate genetic variation over the period of time.
Accordingly, the process of accumulation of genetic variations to get better adapted to the surroundings is followed by natural selection of individuals with beneficial adaptations that impact survival advantage to them. These individuals transmit the adaptations to their progeny.
Gradually, the process leads to the evolution of new species which differ from parental species in having the individuals carrying the beneficial adaptations.
Answer: The water levels would rise because the frozen ice caps are putting their water into the ocean. When they melt all of the water that was previously frozen is going into the ocean and raising sea levels.
Involuntary functions of the body system; processes taking place in the body that is done without conscious efforts such as digestion, bloodflow, the heartbeat are controlled by the autonomic nervous system which is a part of the peripheral nervous system.
