I was growing some bacteria in Petri dishes that I got from wiping my hand with a q-tip. Condensation appeared directly above the bacteria when they got somewhat large. Was this H20 or something else? And why did it form?
Humm The products of ellular respiration are water and carbon dioxide. I wonder if this might be the source of the water?
But if the water came from cellular respiration, why would it be above the bacteria? Wouldn't it just be next to it or something? (The bacteria were in Petri dishes sitting right side up, the droplets appeared on the inside of the lids)
It appeared above because the outside temperature was low enough to condense the water vapor being given off from the bacteria.