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What are food preservatives?
The substances which are used to check the growth of micro-organisms and prevent the spoilage of food, are called food preservatives. Substances like sugar, salt, oil or vinegar or other chemicals are used for this purpose.
The most common carrier of communicable diseases is
The bread or idli dough rises because of
The process of conversion of sugar into alcohol is called
Match the following option.
Can microorganisms be seen with the naked eye? If not, how can they be seen?
What are the major groups of microorganisms?
Name the microorganisms which can fix atmospheric nitrogen in the soil.
Write 10 lines on the usefulness of microorganisms in our lives.
Write a short paragraph on the harms caused by microorganisms.
What are antibiotics? What precautions must be taken while taking antibiotics?
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