bacteria are both evil and friends to us why
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5
Answer:
Some bacteria habitually live in our intestines where they synthesis certain vitamins such as Vitamin B complex. Plants need nitrogen for synthesising proteins but they cannot make use of free atmospheric oxygen.Soil bacteria pick up the free nitrogen in the soil and convert into soluble nitrates.
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Answered by
10
Answer:
some are helpful microorganisms
they help in digestion
help in soil fertility
microorganisms which are not helpful
they spoil the food
causes may diseases
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