Name one advantage of electron microscopes.

 Ability to see organelles (more detailed view)

Explanation:

An electron microscope has a high enough magnification that allows us to get a better look at cell organelles.

If we look at the picture below we can compare a light microscope to an electron microscope (microbiologyinfo.com). The light microscope allows us to see some of the parts of the cell, but to get a more magnified and detailed view, we have the advantage of an Electron microscope.

then that particular organisms become extinct.