Answer:
Population data is defined as a set of individuals who share a characteristic or set of these. A population is mainly determined by geographies, such as all people in California, or all people in the United States. Demographers (people who study human populations) categorize this as the natural population.
Explanation:
Depends on the type of drug test and how often you smoke. If it's a urine test, typically a month or so if you're a frequent user. A hair test can go up to 3 months back unless you have 18" of hair which then can go back 180-360 days. If you shave your head, they're then required to take body hair or a blood test. I'm unsure how long a blood test dates back.
T . When you refuse to do something its cause you know it is wrong or you dont want to do it to be like everyone else .