What is the complete process of photosynthesis?
answer as soon as possible, you.

Photosynthesis: 6H2O + 6CO2 > (yields, in the presence of sunlight) C6H12O6 + 6O2

Light Dependent:
Plants break up the water (H20) into a Hydrogen and an Oxygen (O2). The Oxygen is released through the plant's stoma. The electron from the H is energized by the sun and used in the Electron Transport Chain to make ATP.

Light Independent:
Used CO2, ATP and NADPH in the Calvin Cycle (Basically moving a bunch of Carbon and rearranging it) to eventually make a Glucose molecule (C6H1206).

Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.