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1How Did Life Science Begin?

In this chapter, we will study life, its evolution and diversity, and the place of humans in this diversity. We will also study the history of life science and the methodology of science. The earth was formed 4.62 billion years ago. Life appeared on earth about 3.8 billion years ago and has evolved diversely ever since. Humans are just one species of life that appeared on the earth six million years ago.
Humans walk on two legs, have acquired a large brain and are flourishing, but they would not have been able to flourish without progress in science. We will also discuss scientific methodology and how it has benefited humankind.

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