Ways society can be affected by stds or stis are sexual contact, and the mixing of bodily fluids such as blood, spit (in some stds or stis), sweat (only in some stds or stis), urine, etc.
Regression: The player's performance declined this week due to the regression of his previous injury.
Denial: Although all evidence suggests that he committed the crime, he won't admit to it because he is in denial.
Projection: The students couldn't see the paper the teacher was holding up so the teacher put a projection the front board to enlarge the paper.
Hope this helped.
Answer:
I believe it's the upper part of the wall of the atrium.
