Amphetamines are found in both prescription form and in illicitly manufactured forms, this is commonly known as speed or uppers. One example of an illicitly manufactured amphetamine is methamphetamine and the designer drugs.Typical street amphetamine is manufactured in illicit laboratories and is found in varied colors, but is normally a white crystalline powder that can be normally sniffed.
Answer: True
Explanation: Perception always depends on a diverse multiplicity of factors, such as context, culture, society, etc. We are going to perceive depending of what we were told, taught, our beliefs, our culture so an altered state of conciousness might be seen as another thing according to who is perceiving it.
The engineering notation follows the metric system and the scientific notation does not, I hope this helped. Enjoy The Rest Of Your Day!