Depression, anxiety, perhaps obesity, hypercholesterolemia, and increased susceptibility to infection are symptoms of what disorder?

Allowing the liquid sediment to settle:

A) increases the illumination of the specimen. B) decreases the amount of specimen needed for viewing. C) helps limit the depth of field where the elements are located. D) increases the power of the magnification.

Which of the following is an example of potential energy?

A. a coiled spring B. riding a bicycle C. a flying airplane D. a speeding motorboat