What would happen if you removed H2O from the process of photosynthesis?

Plants would not be able to produce oxygen or glucose and this would cause the plant to die.

Explanation:

6 molecules of carbon dioxide and 6 molecules of water react with sunlight to form 1 single glucose molecule and six oxygen molecules and the role of water is to release oxygen from the water molecule into the atmosphere in the form of oxygen gas.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.