Suppose Dr. Fletcher was concerned that students who choose to join fraternities/sororities are more concerned with their appearance overall. How could he test whether this type of selection threat exists

answer: hey improve the marine life in a certain area.

they provide a new location for fishermen to fish and which works to ease the pressure on natural reefs.

they are a great way to get rid of large objects that would otherwise be placed on landfills

explanation:

answer; ///approx///5,000 miles;

answer; eurasia;