There are many signs, this may help you with your answer https://www.drugabuse.gov/publications/principles-adolescent-substance-use-disorder-treatment-resear...
The answer would be nodding.
First class lever refer to a lever on which the resistance exist in one one side of the fulcrum and an effort is made on the other side you can't get a reaction unless something else causes a reaction.
Answer:
well erm I don't really understand what your trying to say but good luck
Answer:
Stereotype
Explanation:
Stereotypes are oversimplified generalizations about groups of people. Stereotypes can be based on race, ethnicity, age, gender, etc.