As time progressed and technology improved, microscopes were able to give clearer images of extremely tiny objects. How did this development advance the cell theory?

Robert Hooke is accredited with observing the first cells in 1665. At that time, Robert Hooke used a microscope to look at cork cells.

In 1670, Antoni van Leeuwenhoek was accredited with being the first scientist to discover pond life. He used lenses to make the discovery.

Robert Brown (1773-1858) used a microscope to discover the nucleus.

Explanation:

cuz he's blad

explanation:

the answer is:

carbon dioxide