Answer:
Census and sampling are two methods of collecting survey data about the population that are used by many countries. Census implies complete enumeration of the study objects, whereas Sampling connotes enumeration of the subgroup of elements chosen for participation.
Explanation:
All of them because tobacco can cause lung cancer and it’s addicting, and you can die from smoking, alcohol you can become addicted and become a drug addict, and it can ruin your liver, illegal drugs can also be addicting and those can kill you, and sexual activity can be risky because you can get pregnant if you’re not careful.
A will be the answer because usually marking your exercise days will become a habit because lets say you would do a running exercise but you want to do it in a certain day well if you mark it on the calendar, it'll become a habit.
D. an epidemic of infectious disease
Boys go through a growth spurt during puberty. However, the rates of growth can vary a lot because boys go through puberty at different ages. On average, boys tend to grow around 3 inches per year during this period.
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