Green phlegm is an indication that your body is fighting off a more serious infection. While the green color may be alarming, it is a natural byproduct of the immune system activity necessary to fight off the infection. Consider seeing your doctor if your other symptoms are getting worse. Red. Red or pink phlegm can be a more serious warning sign.
groups of cells. A normal light microscope. 4x-20x magnification. individual cell. Lo resolution: Light microscope with 40x magnification. High resolution: Confocal microscope with 40-100x magnification. cell organelles. To view the structure of organelles you would definitely need an Electron Microscope.
A. the camera B. the test tube C. the light microscope D. the electron microscope. Weegy: The instrument essential to the development of the cell theory is the camera. Expert answered|zarkelander|Points 0|.