Chemistry — Types of Fuel
Fossil, bio- and hydrogen fuels and their products.
Rendering…
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digraph Fuels {
node [shape=box, style=rounded];
Fuels -> "Fossil (coal, oil, gas)";
Fuels -> "Biofuels (ethanol, biodiesel)";
Fuels -> Hydrogen;
"Fossil (coal, oil, gas)" -> "CO2 + pollutants";
Hydrogen -> "Water only";
}