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ELEN [110]
3 years ago
9

20. Many years 90, scientists working with cells developed what is now known as the

Biology
1 answer:
serious [3.7K]3 years ago
8 0

Answer:

By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells

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