Find the slope of the line that goes through the points (15,-5) and (7,-11)

"air pollution" is the correct answer i believe

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!

  separated twins develop traits that differ according to the environments in which they are raised.

The answer is c. the occurrence of anxiety attacks because circadian rhythm means an biological  process that displays anxiety. i hope i .