While observing slides under a microscope, jack adjusts the microscope’s mirror so that a circle of light can be seen. which microscope is in use?
a. light microscope
b. electron microscope
c. scanning electron microscope

I think the correct answer from the choices listed above is option A. The microscope that Jack used is a light microscope. This type of microscope uses slides where a sample to be observed is placed. Also, it has a light source in order to have clear observations.

Retype the question .

The open ocean begins at the low-tide mark and extends to the end of the continental shelf

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.