What is the primary function of the upper respiratory system? to move air toward the lungs while warming, moistening, and filtering it to diffuse oxygen and carbon dioxide in and out of cells to absorb and break down nutrients after they are consumed to pad the head with air pockets to protect against brain trauma

Ab+cd-> ad+bc is what kind of reaction

Which of the following foods would be the best choice for someone who's lactose-intolerant?   a.  frozen yogurt    b.  strawberry sorbet    c.  cheesecake    d.  chocolate ice cream

According to positive psychologists, an individual’s subjective well-being consists of one’s and a. overall level of happiness . . life satisfaction b. goal accomplishments . . money earned c. idea of self-importance . . social acceptance d. level of self-esteem . . pride sorry am i just not getting it or is this worded confusingly xd