...the life of the planet began the long, slow process of modulating and regulating the physical conditions of the planet. The oxygen in today's atmosphere is almost entirely the result of photosynthetic living, which had its start with the appearance of blue-green algae among the microorganisms.
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About Lewis Thomas
Lewis Thomas was American physician, researcher, writer, and educator. Lewis Thomas was an American physician, poet, etymologist, essayist, administrator, educator, policy advisor, and researcher. Read more on Wikipedia →