By one person humping another and they provide heat and babies!
Much of the energy we use nowadays (as of 2016) is from the so-called non-renewable sources - mainly coal, and petroleum.
Fossil feuls
Fossil feuls effect the environment by smelling. lLolL =]
petrol is a fossil feul and fossil feuls are non-renewable.
cholesterol do not provide energy to body because the energy that contains the it wastes ots of energy so it doesnt provide energy.
appliances that provide heat energy
friendship glows up by mutual care that feuls its love everafter.
Carbohydrates do not provide good energy
Uranium or Plutonium For reactor fuel any Transuranic element works fine.
Vitamins, minerals, fiber, and water do not provide energy
they provide energy carriers
There's a shortage of oil, pushing car companies into researching alternative feuls.