In the galapagos islands, which of the following would have prevented the evolution of the many different species of finches?
a) the availability of different food sources on each island
b) the appearance of a disease that kills off many finches
c) introduction of predators preferentially consuming ground finches
d) frequent migration of finches between the islands
e) dramatic reduction in population due to drought

Answer:

Dramatic reduction in population due to drought in the Galapagos Islands would have prevented the evolution of the many different species of finches.

Explanation:

Darwin observed that the shape of beak varies among the finch species. He suggested the ancestral species of finch might have overcrowded the island as a result of competition groups of finches adapted to feed over different food sources.

As a result of the natural selection, the traits for survival were passed down in the generation. However, if the population was reduced due to drought this evolution can be prevented.                              

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.