Need Help, Basic Question Which of the following is a reactant of cellular respiration?

A. Carbon dioxide
B. Nitrogen
C. Water
D. Glucose

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .

Were you able to observe the nucleolus in any of the cells if so which ones

Plz quick a natural resource that is replaceable through a cycle in nature or sustainable practice is called a? the subject is science