6) What message is the artist trying to convey? A. Congress has lost power in the past 50 years B. The United States has almost doubled in population since 1970 C. Senior citizens are a powerful interest group D. Senior citizens have no power when it comes to decision making

B. The United States has almost doubled in population since 1970.

Explanation:

The population of US has faced a rapid growth in its population. The US population has been rising from 4.7% in 1970 and 13.1% in 2013. The research has proved that there has been significant increase in population growth of the world. The US has faced a larger population growth with immigrants than any other country.

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.