Which type of pathogen causes the flu?
A). protozoa
B). fungi
C). bacteria
D). virus

Which of the following substances would you expect to find in the blood, and not in the lymph? selected answers: calcium glucose calcium glucose estrogen oxygen fatty acids water answers:

Which action is most likely to contribute to a positive self-image?

What type of breathing, also known as balanced breathing, makes the respiratory rhythm more regular, which in turn has a soothing effect on the entire nervous system?