Question

why the food and pickles get spoilt in a packet or in covering​

Answer 1

Answer:

Microscopic bacteria cause food to spoil. These tiny organisms, called spoilage bacteria, consume unprotected foods and produce waste products. As long as nutrition and water are present, bacteria will multiply, sometimes rapidly. Bacterial waste is the cause of the foul smell and rotten appearance of spoiled food. Surprisingly, rotten food will not necessarily cause illness if consumed. Instead, other bacteria species called pathogenic bacteria are the cause of foodborne illnesses like salmonella and E. coli. It's possible for food to look and smell safe, but still contain dangerous levels of pathogenic bacteria.

Answer 2

Answer: Biji returned the packet because he saw the fungus created inside the packet may be it had expired. Q2. How did she find that the bread had got spoilt? Answer: she found out that the bread had got spoilt by seeing the black spots in it.