Water is critically important to me in the morning .... Because I like to chug it when I'm hungover and I shower every morning because showers are So awesome !!! Also coffee .. I need water to make coffee. And I really need to wash my sheets every 2 days because I'm in a newish relationship and I only have 7 sets of sheets .. So water. I know this is a homework question by the wording and my answer will get you a solid F .. You are welcome :p
The most important facet for organisms that exist by the process of oxidative phosphorylation.
6CO2 + 6H2O --> C6H12O2 + 6O2
This biochemical pathway in plants ( and oceanic protists ), photosynthesis, manufactures from water and carbon dioxide the plant food/building material and as waste the oxygen we breathe.
Colorless, odorless, tasteless, and calorie free, water is vital to all life on earth. No human, animal, or plant can live without it. From elephant to microbe, water is essential; and there is no substitute. Each of the billions of people on earth needs to consume water every day to keep healthy. No water, no life. Without water, it is impossible to grow crops or to raise livestock. No water, no food—no food, no life. Drink plenty of water!