Question

3. Discuss any three important ways in which bacteria are useful to us. Are they harmful too?
Explain with examples.
4. Write a short note on :
(a) Antibiotics
(b) Spoilage of food
(c) Canning
(d) Commercial production of alcohol
5. How will you preserve the following food items?
(a) Peas
(b) Cereals
(c) Pickle
(d) Dry fruit
(e) Milk
​

Answer 1

Answer:

please markest me a brainlest ❤️