or

What is atmospheric pressure? Write its importance.

The pressure exerted by the atmosphere due to its weight is called atmospheric pressure. Its importance is:

  1. Our blood pressure is balanced.
  2. Helps to fill ink in the fountain pen.
  3. Helps to fill medicine in a syringe.
  4. Helps to fill the air in a tube.
  5. Helps to drink liquid through a straw.