Define these different elements of Sanitizer effectiveness: Water hardness.
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(hope) unrealistic portrayals of slim bodies can encourage people to lose an unhealthy amount of weight. being underweight or malnourished can lead to a. liver abnormalities b. tendon rupture c. muscle damage d. heart issues

How could you find out if that advice is based in scientific evidence?

What are the two things that all sociologists do in their studies?