We all know that the ocean is a huge mass of water which covers about 70 percent of the total surface of earth. Ocean provides a lot of benefits to us. It absorbs carbon dioxide from the environment and releases oxygen, absorbs excess heat reaching the earth and regulates climate, provides trade routes and livelihoods,

Plants are important for the very existence of humans and all other living things on the earth. Plants convert carbon dioxide to oxygen, they provide primary food, shelter, fuel and other important things required for the life of humans and other animals. Besides all these plants are important sources of a large number of drugs.

Do you ever wonder where all these drugs are obtained?. In ancient times people used crud drugs obtained from the trees and herbs for the treatment of diseases. They crushed some leaves or roots of some plants and swallowed it or made them as powder and applied to some body parts etc without knowing which