When we hear the word bacteria, the first thing that comes to mind is infection of some kind. But bacteria are also beneficial to man. Can you choose the
statements that correctly describe the beneficial roles bacteria play in our lives?
Decompose organic wastes into humus which can improve soil fertility.
Bacteria in human colon synthesize vitamins B and K.
Used in the pasteurization of the milk we drink.
Used in the preparation of some dairy products like yogurt and buttermilk.
Fixes atmospheric nitrogen so it can be used by other organisms.
Used as a form of cattle feed on large farms when village runs low.
Answers: 2
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