Which of the following is not one of the 3 main factors that affect your health?
-illness
-environment
-heredity
-behavior

Which of the following is not a fitness benefit of cycling a: very effective at burning fat b: provides an upper body workout c: provides an aerobic workout d: good exercise for out of shape people

Which situational condition decreases the chances of crimes?

Explain why many people are concerned about uv rays? explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?