The question isn't entirely clear. Quickest for what?
Glucose is the body's immediate energy source. Because the brains preferred source of energy is glucose, it needs a constant supply!!
Adenosine_triphosphate (ATP). See the Related Link below.
Sunlight and Carbohydrate and Wind:))) don't take my advice I'm only 11 years old
It is simple
GLOCUSE.
Carbohydrates.
Glucose to make ATP (your Energy)
Solar power.
carbohydrates
The Sun is the main and most important energy source.
solar energy
nonrenewable sources of energy
Coal
The sun.
Carbohydrates are the most readily available source of energy. Carbohydrates are essential to one's diet and are found in many types of food.
Carbohydrates, as a class, provide the most readily available energy source for cells. The complex carbohydrates will split to simple sugars for immediate fuel.
Glucose is the energy that is locked inside an organic molecule most readily accessible in.
Carbohidrates
it is true
carbohydrates
Coal, oil and natural gas are Americas most "readily" usable and presently abundant sources of energy.
Because they are the most readily available and easiest to use energy source. We need to use any and all available energy sources. Fossil fuels have many drawbacks, but their near global availability and ease of use guarantees that they will be used even with such drawbacks.
No that would be glucose, if lipids were the preferred source then fat burning would be very simple, lipids are long term energy stores.
Solar power- This is one of the promising renewable technologies we have available. The techology is reliable because the energy can be stored and is readily available. Practical application requires an area witha regularly sunny climate. To harness the power of the Sun, photovoltaic cells are put together into panels. When the light contacts the plates, they abosorb the energy and turn in into electricity. The second way is to focus infared radiation (sunlight) on water to boil it, thus being able to make electricity. Though the technology is somewhat expensive, it is the most readily energy source we currently have.
Oil, followed by natural gas and hydroelectric power.
Heat energy.