Researchers have reported lower levels of tension, anxiety, fatigue, and depression in adults who participate in which form of exercise?

Mood disorders can usually be treated with _____ and _____, but they often appear, disappear, and reappear

Fill in the blank with correct word

With regard to large-scale catastrophes such as Hurricane Katrina, the terrorist attack on the World Trade Center on 9/11/01, and the Indonesia tsunami, what happens to the bystander effect?

a) it is greatly reduced b) it is even stronger because there are more people involved c) it is present, but people eventually respond d) it is present, but only in the United States