Respuesta :
invention of the microscope because without it you can't even see the cells in the body or on anything other living organism.
Answer:
invention of the microscope
Explanation:
Cells of living beings vary in size. However, most of the cells are microscopic in nature and can not be seen with unaided eyes. Microscope amplifies the image and allows us to observe the tiny cells and cell organelles and other structures present in them. The ultra-structure of cells could not be studied without a microscope.
