C. They diagnose and treat mental health conditions by conducting exams..............
B. because entry points are vital to the spread of infection
False it is false since pollution isn't only in the city
Answer:
-“These analyses found that the “alcoholism or depression” phenotype showed significant evidence for genetic linkage to an area on chromosome 1. This suggests that a gene or genes on chromosome 1 may predispose some people to alcoholism and others to depression (which may be alcohol induced).” (Pubs.gov)
Explanation: i used a .gov website which is very good