"opportunity cost" is related to the basic economic concept known as
demand
price
scarcity
supply

If a swimmer is traveling at a constant speed of 0.85 m/s,how long would it take to swim the length of a 50m olympic sized pool?

Whether or not a given study has the possibility of causing harm to participants:

The specific department of health and human services (hhs) regulations that apply to research with children are known as: subpart b: additional protections for children involved as subjects in researchsubpart a: the common rulesubpart d: additional protections for children involved as subjects in researchsubpart c: protections for children in research