Correlational studies show that heavy exposure to media violence among u. s. 9- to 11-year-olds increased rates of violent behavior when they were teens.

Correlational studies show that heavy exposure to media violence among 9- to 11-year-olds in the U.S. causes increased rates of violent behavior when they were teens. Young children, especially at ages 9-11 years old are still in their developmental stage. Thus, they only tend to imitate what they often see, not knowing if it's right or wrong.  

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.