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.

Amanda, a forensics expert, has been called in to examine blood samples and prints found at a crime scene. she conducts a thorough analysis of the matter using her expertise and knowledge. she then prepares forensic reports to support the police investigation. what type of evidence has amanda provided in this situation? a. real evidence b. testimonial evidence c. direct evidence d. circumstantial evidence