What protect and keep the airway open in your lungs?

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation

Blood cells bring oxygen to cells and take carbon dioxide away. true or false

An obese man 5'5 and 200 pounds, seta a long-term goal to loose 50 pounds which of these is a resonable benchmark he might set for himself