The spread of certain elements from one group to another in society.

What creates an electric force field that moves electrons through a circuit? a. energy sourceb. loadc. metal wiresd. resistance

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

Tanya is not able to solve a problem because she’s unable to see it from a fresh perspective. which obstacle to problem solving is tanya experiencing? a. fixation b. counterproductive heuristic c. confirmation bias d. overconfidence