According to natural selection, some organisms in a population are more likely to survive and reproduce. Which statement gives the best explanation for this fact? A. The rate of reproduction varies among individuals in the population.
B. Not all traits are passed from parent to offspring.
C. Some organisms learn behaviors at a faster rate.
D. Individuals with higher survival rates are better adapted to their environment.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

b is the answer and if you need further with anything message me