Answer:
Antoni Van Leeuwenhoek and Robert Hooke
Explanation:
Antonie van Leeuwenhoek and Robert Hooke have made significant contributions to the development of biology using optical microscopes. Leeuwenhoek used single-lens microscopes, while Hooke used two-lens microscopes. These devices allowed these two scientists to discover the microorganisms and initiate the microbiology that is a very important science today.