What effect did the ice ages have on early humans? a. Early humans were forced to control large fires. b. Early humans were forced to fish. c. Early humans were forced to move to new environments. d. Early humans were forced to hunt. Please select the best answer from the choices provided A.
B.
C.
D.​

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .