What is crop?

What is the first step of growing crop?

Kharif crop

Microorganisms can be seen only with the help of.

Cholera is caused by

Give two examples which indicates nylon fibres are very strong.

Explain why some fibres are synthesis.

Why aluminum foil are used to wrap food?

Sodium and potassium are stored in kerosene?

What we have to do To draw water from a well?