That looks to be very simple question! I have been working on this for quite some time. I am not sure about the answer. From morning to evening you go on eating some or other food. If you are taking the low carbohydrate food, then the answer is simple. You are using the fat as main fuel. But when you are taking the normal diet, then in day time, you are using the carbohydrates as main source of energy. In night time, you are using the body fat as the main fuel. But frankly speaking, I do not know for sure the correct answer for twenty four hours. (You have only 300 grams of glycogen stored in your body. You have about 15 to 20 KG of fat stored in your body.)
Food,Water,Blood
But more specifically the proteins and oxygen (O2) transferred to your muscles through your blood the body does not consume blood.
Glucose is the primary source of fuel for bodies.
Glycogen
fat
Sugar
metabolims
Hydrogen is the primary fuel source of the Sun. The sun burns hydrogen into helium
As a source of food (fuel, energy) when you're not digesting real food. (Otherwise you'd have to digest yourself - a sure sign of starvation.)
The principal fuel source for living animals is monosaccharides.
Burning various carbon rich substances for fuel is the primary source of additional atmospheric CO2. Fuel is needed for EVERYTHING. Travel, heat, electricity, etc.
hydrogen
metabolims
Coal is used as Utah's primary source for electricity while natural gas is the state's primary source for heating fuel.
Plants convert solar energy (the primary energy source in the environment) into food and fuel.
Hydrogen is not a renewable fuel. It is a secondary energy source (or an energy carrier) that could be produced using another primary energy source. Hydrogen could be produced using either renewable primary energy source (e.g. solar energy), nuclear energy, or by using fossil fuel (e.g. natural gas)
The primary thing that makes an item a rocket is its ability to fly into the air. A propellant or fuel source is the primary company needed to achieve this.
Yes I wouldn't recommend heading to the local gas station for a fill up. However, the food you eat is the fuel that provides an energy source for your body.
Hydrogen is the primary fuel source of the Sun. The sun burns hydrogen into helium
Yes, muscle glycogen is a primary fuel source for endurance exercises such as long-distance running and cycling. It is stored in muscle tissue and can be rapidly broken down to provide energy during prolonged, low to moderate intensity activities. However, for longer endurance events, the body may also utilize fat stores as a fuel source.
The primary power source is solar power from the large arrays connected to the station. There are also two backup generators and smaller fuel cells for various experiments.
The primary fuel for all stars is hydrogen
In richer countries it is usually electricity or fossil fuels. In poorer countries it is usually wood.