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Microbes Are Everywhere
- Microbes are found in water, soil, air, and food.
- They grow on food left in the open, making it rot.
- Some live in extreme places, like hot springs and cold zones.
- Some live inside us, like gut bacteria that help digestion.
Example 1 — Rotting Fruit
- A fruit is left out for some days.
- A powdery or cottony growth appears on it.
- So microbes from the air have grown on it.
Example 2 — Pickles and Murabbas
- Pickles have a lot of salt, sugar, or spices.
- These act as preservatives.
- So microbes cannot grow and spoil them.
Important Points
- Microbes vary in shape: spherical, rod-shaped, or irregular.
- High salt or sugar stops microbes from growing on food.
Definition — Preservative
A preservative, such as salt or sugar, is something added to food to stop microbes from growing and spoiling it.
