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It doesn't need a medium to travel through.
nuclear energy
Potential Energy and Kinetic Energy
electrical energy to thermal energy :D
Potential energy, kinetic energy, solar energy, chemical energy, sound energy, nuclear energy, gravitational energy, electric energy, heat energy,
there are LOTS of differrent kinds!!!
It doesn't need a medium to travel through.
many
That depends on how you choose to classify energy.
There are many different kinds of waves, and many different kinds of wave energy, and many different kinds of equipment used to produce such energy. For example, a lightbulb, since light is a form of electromagnetic wave.
because eachcell has different uses and characteristics. they join to form differrent tissues and which later form different organs
because they have differrent things in differrent enviroments.
there are many kinds of issues about energy one of this is the lock of supply we have to save energy for the use of the other generations
There are about 200 differrent species in the tropical rainforest.
there are many kinds of grants and it includes energy, education, housing, etc.. you can look for it here in http://www.governmentgrantsearch.com/
The "two" kinds of energy are real and vector energy. Mot accounting for the two kinds of energy is the cause of current confusion in physics. Newton and Einstein missed the two kinds of energy real and vector. The gravitational energy is E= -mu/r + mcV. The first kind of energy Newton got the real or potential energy -mu/r. The unaccounted for energy is the "vector" energy mcV. The vector energy is the source of "dark energy" and myriad mysteries in cosmology. The Universe has two kinds of numbers, real numbers and vector numbers. This gives two kinds of energy, and two kinds of forces ,etc,etc,etc. Quaternions are the answer to the "two kinds" of energy, "reals and vectors" or quaternions!
You could save many kinds of energy because you wouldn't have to use energy to dig up the gasoline, ship it, contain it, or pump it, so by not driving you save multiple kinds of energy