Which statement describes how favorable traits in a population relate to natural selection?

Stan is a ninth grader involved in active sports. which list of food would provide him with a balanced diet

When considering the claim that eating well to reduce stress, what advice might you give a friend who appears to be stressed about an upcoming exam, but chooses to have chips and soda for lunch everyday?

There is only one copy machine at your office. you have to make 1000 copies of an expense report. after you begin copying, two other employees show up in the copy room. each has to make only 10 copies each. what is the proper etiquette in this situation?