People are sometimes likely to help others, and other times are less likely. Explain the factors involved in the concept of helping others by discussing altruism, the bystander effect, the social exchange theory, the reciprocity norm, and the social responsibility norm.

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii