It's true that energy is never destroyed-- whan you use up a source of energy, you simply convert it to another form. When gas is burned in a car, for example, it turns from chemical energy to thermal and kinetic energy, which is then converted into sound, and eventually thermal energy in the form of friction.
why do you think coal is the most energy source we are going to use in the future
Its cheap.
according to my calculations, the cells use carbohydrates as an energy source, and that is enough for the body nucleic acids are used for our genetic makeup and not for our energy usage
The difference is the way they obtain energy. Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic (chemoorganotrophs) or inorganic (chemolithotrophs). Photoheterotrophs are heterotrophic organisms that use light for energy, but cannot use carbon dioxide as their sole carbon source.
chemoautotrophs
We run out of means to convert it. Coal is stored potential energy, if we use it all and the resulting heat energy escapes into space, we've lost that energy. World's water evaporates, no hydro power.
It is changed into a different form of energy as it cannot be destroyed (First law of thermodynamics) usually kinetic energy of the molecules
It is changed into a different form of energy as it cannot be destroyed (First law of thermodynamics) usually kinetic energy of the molecules
You cannot use the chemical energy of water as a source of energy. It takes more energy to use it than you get out of it.
Cells, like humans, cannot generate energy without locating a source in their environment.
First law of thermodynamics: energy cannot be created nor destroyed.
There are many different laws of conservation, but they are essentially the same. For this example I will use energy. The laws of conservation of energy say that energy in = energy out. This is to say that energy cannot be destroyed or created.
A computers energy source is electricity. When using a computer plugged in or not it is drawing electricity from the battery or from a plug which is connected into the PC and a wall outlet. When there is no electricity the computer cannot function.
Glucose is the energy source for the body. But it cannot use it in that form, so it converts it to ATP for use in metabolism.
glucose is the primary source of energy. ATP's cannot store a lot of energy so the plats use glucose (C6H12O6) to store their energy.
Carbohydrates
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