<h2>C) option is correct </h2>
Explanation:
Natural selection as proposed by Darwin is a selection pressure which operates in a population and allow the best fitted genotype to survive in changing environmental conditions and eliminate the other genotype which are not fit
Causes of natural selection include: Genetic drift, mutation(changes allelic frequency) and sexual selection
In the given example, condition necessary for natural selection to occur on the mouse population is traits that affect the survival of the mice vary among individual mice, in this condition superior genotype will get the opportunity to reproduce and inferior genotype does not get opportunity to reproduce thus their genotype in population does not increase rapidly and hence they become eliminated leading to genetic drift
Answer:
1) The muscles need more energy as the breathing rate and heart rate increase to bring more oxygen into the body and remove carbon dioxide. More energy is needed to supply muscles with extra oxygen and remove carbon dioxide.
2) Glycogen in the muscles.
3) Rate and volume of breathing increases,
Cardiac output is increased,
Blood flow from nonessential organs is provided to the working muscle.
4) Muscle cells respire anaerobically when there is a temporary deficiency of oxygen during high intensity exercises.
5) Lactic acid.
6) Muscle fatigue is when the muscle cannot perform as normal (decline of ability) due to a result of vigorous exercise.
7) A temporary oxygen shortage in the body tissues due to exercise.
8) Oxygen+ Lactic acid goes to Carbon dioxide + water.
9) The body continues to respire in order to get more oxygen and remove carbon dioxide.
10) The heart rate and breathing rate stay high after exercise in order to repay the oxygen debt and remove carbon dioxide. They also have to reduce the acid based balance in the muscles to neutral.
11) Lactic acid can also removed by being converted into Glycogen. This involves the muscles as glycogen is a product of the muscles
Hope this helps!
DDT was once used as an insecticide to B. kill insects. It was banned in 1972 because it thinned the eggshells of birds of prey like the patriotic bald eagle and the peregrine falcon.
