What society needs were addressed by science in the ancient world?

Like in modern times, several of the ancient civilizations also studied biology. They were also familiar with the natural processes and used that knowledge to help the individuals of society. The Asian civilizations were the first to use herbal medicines, and the South American civilizations developed methods of agriculture like crop domestication and irrigation.  

The contribution of Greek civilizations is well-familiar with each and everyone regarding the evolution of life science. They have developed the basic guidelines of the science known today. In 400 BC, the School of Medicine was created by the Greek physician Hippocrates. Also the initial categorization of living species was done by Aristotle, a Greek philosopher.  

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

answer: 45

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