What is the chemical lead found in, besides in cigarettes.

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

Bloodborn pathogens are infectious microorganisms carried by what?

How do you imagine the heart of a person with prolonged high blood pressure might look different from the heart of someone with normal blood pressure?