Sociology is the study of: a. group-level dynamics and social structures. b. how urges, drives, and the mind can account for human behavior. c. the underlying variation or causal mechanisms within the biological nature of individuals. d. humans as rational utility maximizers.

The answer is A. Sociology is the study of human communal relationships and organizations. Sociology's topic matter is varied, extending from crime to religion, from the family to the national, from the separations of race and communal class to the communal opinions of a common culture, and from social constancy to fundamental change in whole civilizations.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.