Apsychologist's research focuses on how ecological changes affect a child's growth. the psychologist's focus fits best into the area of specialization known as psychology.

answer; developmental;

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.

what he said above me         look up that's the answer