Answer:
The answer is C
Explanation:
Therefore, in order to swim in the English channel, in which its waters are extremely cold, we need carbohydrates like glucose that provide 4 kilocalories per gram. ... Fats are much more energetic foods, producing about 9 kilocalories of energy per gram, more than double that of sugar. Experts recommend that no more than 30% of the calories in our diet come from fat.
The answer is : C.) Chinchillas are used as models for this research because their hearing ability is similar to that of a human. Hope I helped ;)
The theory that is demonstrated by this experiment is natural selection.
Basically, only the strongest bacteria survived, and nature decided which of those bacteria were fit enough to get to live and reproduce in the future. Those bacteria that were "willing" and able to fight their way through a huge number of bacteria were the ones who ultimately won.
there could be harmful chemicals
I think the answer is A. not entirely sure
