Which are challenges faced by a successful revolution?
a. measuring the success of change
b. extremist can take over
c. counterrevolutions
d..undo the changes made
e. clearly defined goals are implemented
f. original goals are watered-down and are a disappointment to the people

they encountered severe weather for which they were poorly prepared.

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; limbic system;

answermontesquieu rousseau;