Explain how can you take care of your eyes .

Explain how you can locate the Pole Star with the help of Ursa Major.

What precautions can you take in your school to reduce the incidence of infectious diseases?

Explain how sound is produced by your school bell.

Explain how liquid hydrogen can be used as a fuel

(a) Explain how some plants are adapted for achieving pollination through insects. (b). Explain how pollination takes place in vallisneria and submerged aquatic plants.

The problem of blindness in poor countries can be taken care of by using which of the following?

What steps will you take to make your city a"smart city"