Vaccines are effective in preventing disease because they
a. prepare the immune system to recognize and destroy pathogens.
b. combine with pathogens to inactivate them.
c. contain specific b lymphocytes.
d. consist of bacteria that could infect healthy cells

Genital herpes is some stis can be cured while others can only be treated which of the following is an sti that can currently only be treated not cured

Which term is used to describe a hole played in one stroke under par?

Rachel wants to improve her body composition by reducing her bmi. she swims with her friends after school two days a week and eats a well-balanced diet. what else should she do to ensure that she properly applies all the necessary fitt principles in her plan? a. she should add more cardiovascular training and weight training to her exercise routine and eat several low-calorie meals throughout the day. b. she should increase her swimming workouts to five days a week and eat a high-calorie diet that equals 2,500 calories. c. she should add a few days of weight training to her exercise routine and consume 4,000 calories a day. d. she should eat a high-protein, low-carbohydrate diet and add five days of weight training to her exercise routine. select the best answer from the choices provided. a b c d mark this and return