Answer:
Robert Hooke
Explanation:
Robert Hooke was a scientist in the field of biology, chemistry, physics. His great discoveries were very important, especially for the understanding of microscopic world, even though they weren't accepted at first. He was the first who developed compound microscope, in which scientists no loner had to move the specimen in order to focus it. Hooke also improved the microscope lightening. When he looked at the bark of a cork tree, he saw new structures and called it cells (because it look to him like rooms in monastery).
