To a large extent, the choices you make now will affect your health as you grow older. For example, a person who exercises and eats regular, nutritious meals is much more likely to enjoy good health as an older adult than an inactive person who eats foods high in fat and cholesterol.
Your excretory system removes the waste products of metabolism from your body. It also removes excess water and minerals. Your kidneys are the main organ of excretion, but you’re respiratory and digestive systems also play a role.
Everyone faces a variety of challenges. It may be the challenge of moving to a new town and making friends. Or it may be the challenge of rejection when you learn that the person you have a crush on doesn't feel the same about you.
Think back to Aaron at the beginning of this chapter. Assume that you are a friend of his and you've noticed that he has seemed really down lately. One night he says to you: "This may be the last time you will see me." Which of the following should you do? 1.
Carmen, the girl discussed in the beginning (this chapter, has been seeing Danny for bout two months. They really like being together—Carmen has feelings for Danny he's never had for anyone else. For that reason, she was kind of disturbed that Danny wasn't in her dream about getting married.
