Caffeine is extremely water soluble, the easiest way to reduce the amount of caffeine in your tea is to pour boiling water over the tea leaves (bags if you are using them) and steep 30 seconds. Pour out the first steeping and refill your cup/pot with boiling water. Steep for the recommended time and enjoy.
Well sure, it dilutes it. If you end up drinking all of it anyway, then you're consuming the same amount of caffeine. If you're asking whether it mitigates the diuretic effects of caffeine, I suppose it would by definition. But chemically it doesn't change anything.
The amount of water in the ocean temporary decrease.
It's NOT "A" B: A decrease in the amount of organic matter.
decrease
evaporation
Decrease
no
decrease
Decrease
decrease in pressure
respiration
The amount of water you add.