Easy. Answer is oxygen because it says which one was missing before any life was on earth. And in order to have life on earth you need oxygen!
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Initially address, Gram-negative in light of the fact that the precious stone violet restrains the development of gram-positive.
Second question, Fermentation: the blend of carb lactose, bile salts, and pH turn it unbiased red since they are enteric and age lactose
Third, we would see the development since it is gram negative microbes.
Fourth
1. coliform microbes (pink settlements in light of the fact that the pH is brought down and they are lactose fermenters)
2. Looseness of the bowels typhoid, and paratyphoid bacilli (tan and straightforward provinces since they are non-fermenters)
Answer:
Explanation:
C. The rate of oxygen production is greatest in section M.
Answer: not me
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