Why is virus not included in the category of micro-organism?

What is the most likely effect a decrease of plant life in the biosphere would have on the atmosphere a. A decrease in plant life would have no effect on the atmosphere. b. A decrease in plant life wo? What happens when normal cells are grown in a dish containing all the requirements necessary? What are the first organismsnto occupy a barren landscape following an event such as glacial retreat called? What body part does a cricket use to chirp? How many years are represented between the deposition of the bottom and top layers? When Peter first arrives at the Stone Table what is he surprised to see beyond the Stone Table? Does pewter chip? How many ounces is 80 grams of washing powder? What brain region is affected by cortisol? What cause circuit breaker to trip when refrigerator plug in? Did tupac like ice cube? What is meant by this '0-2 red blood cells'? Where is a Firework show in Cleveland tn on July 4th 2009? Which plant pigment traps most of the light energy used in photosynthesis? What does your body do with energy released during cellular respiration? When it is 3 pm in Hawaii what time will it be in Pennsylvania? Four letter flower names? Whats the biggest snake in the world? What is the order of steps that occur as a protein is synthesized within a cell and finally excreted for use outside of the cell? Who created horsepower?