Transportation, electricity generation, heating, and cooking.
planes crashOn a more serious note, air transportation is the leastfuel-efficient form of transportation, using the most fuel per mass/distance of any modern transport. It also uses the most expensive form of vehicle in the transportation area (as measured by capacity/$ )
Every type of transportation we have uses some form of fossil fuel either to run it or build it.
Because most of the ingredients in transportation fuel are poisonous to humans and if you cooked with them and ate the food it would kill you. Or at least seriously harm you.
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Food today is grown and shipped all over the world. Shipping anything uses fuel. Most transportation fuels are derived from oil. Therefore our food is dependent on oil.
Any vehicle that uses a combustable engine. Jet airplanes, and most cars and tucks are good examples. Train locomotives, and nuclear air craft carriers do not burn fuel to move. They burn fuel and convert and store the energy. But they do not use the energy produced from burning fuel to directly power their movement.
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The best way to save energy in transportation is to increase the fuel efficiency of motor vehicles.
There are two main types of fuel: solid fuel and liquid fuel. Rocket fuel most use both a fuel and an oxidizer. The solid fuel in most modern rockets uses aluminum powder as fuel, ammonium perchlorate as an oxidizer, and iron oxide as a catalyst. Liquid fuel uses liquid hydrogen as fuel and liquid oxygen as an oxidizer.
Transportation, recreation, and fresh water for wildlife and humans