Well for one, we used coal for electricity, water for steam engines when they were much in use, natural fossil feuls for our gasoline and oil, and we use earths oxygen/nitrogen gasses to breathe and sadly we are polluting it at a fast rate
The majority takes place in the small intestine
Polar<span> molecules
water molecules have a weak, partial negative charge at one region of the molecule (the oxygen atom in water) and a partial positive charge elsewhere (the </span>hydrogen<span> atoms in water).The force of attraction is called a </span>hydrogen bond<span>.</span>
Hydrogen fuel works on the principle of making water by H2 and O2 !!
At the cathode (negative electrode): H2(g)-2e →2H+(aq)
At the anode (positive electrode): 4H+(aq) + O2(g) + 4e– → 2H2O(g)
* As there is no harmful gasses evolve, and only water is formed so these cells are clean and healthy to use !!
(ADDITIONAL)
and remember these are 90-98% efficient !! as compare to petrol or diesel that are 50-60% efficient !!
Hydrogen fuel cells are used in Space programs to make pure water and other purposes !!
