Addiction: Central nervous system (CNS) stimulants are addictive, even if they are not abused. Many factors, including the patient's personal history, the type of stimulant that is being taken, the dose of the drug, and duration of use, influence how likely an individual is to become addicted.
The source of all waves - mechanical or electromagnetic - is something that is vibrating. Matthew Donovan.
What is the ultimate source of all energy in food produced on Earth? The ultimate source of all energy in food produced on Earth is  Sunlight. Plants provide food, energy source which is fuel, oxygen,  and raw materials.