Dillard is careful to place these opposing descriptions (of the natural and man made) side-by-side. How does this juxtaposition fit with or challenge what we have already read

yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.

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.

answer; rate;

answer; illegible handwriting;