JoAnn has a cold. She is coughing up mucus (a respiratory secretion). JoAnn's lungs are the in the chain of transmission. The mucus from her cough is the
in the chain of transmission.

Viral infections in plants ) can be controlled with antibioticsb) can spread within a plant via plasmodesmata c) have little effect on plant growthd) are not spread by animals

Take a nutritional supplement during times of stress a. is recommended by al doctors as a stress management technique b. has been scientifically proven to aid in stress management c. only adds to the stress you’re feeling d. can you feel better because you believe it will you

How do psychologists their patients control feelings of anxiety?