Microbes need moisture, air and the right temperature to grow. If any one of these is removed, their growth can be stopped or slowed, which is the basic idea behind many food preservation methods.
Class 5 Environmental Studies Grade 5 Chapter 3 The Mystery of Food solutions
CBSE Class 5 EVS Unit 2: Health and Well-being Chapter 3 The Mystery of Food Question Answer
For microbes to grow, they require three main things — moisture, air and the right temperature. Without any one of these, their growth slows or stops completely. This is why methods like drying, oiling and refrigeration work effectively, as they remove moisture, block air or lower temperature, thus preventing the rapid growth of microbes on food items.
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