Smoking can put smokers at risk for health problems, but smokers are also subject to social consequences. write a short letter to a friend or family member, urging them to abstain from smoking, using the social and physical consequences of smoking as the support for your argument.

How do the uv rays cause damage?   what exactly causes the skin to burn;   can you be more specific about this mechanism?   3. how do photosensitive medications increase a person's sensitivity to sunlight and therefore increase their risk of getting burned?     what kind of medications can increase photo-sensitivity, can you think of some examples?

American college students invented football by combining what two sports?

What is one way that cold and flu viruses spread? a. by transfusing contaminated blood b. by inhaling contaminated droplets c. by eating contaminated meat d. by drinking contaminated water