The primary purpose of the first paragraph is to A. inspire students to enter scientific professions B. argue that certain animal groups are becoming extinct C. encourage people to follow the progress of current scientific research D. call attention to the decline of a significant field of study

It is meant that like tapestry scientific theories often need to pull out since they are not relevant and often times the whole chain of theories may be pulled out.   

It is written in the constitution saying all beliefs are allowed in the u.s. justice will be surved to everyone no matter what the color of that person is. and that all people are equal not matter there color is the u.s. that was a lie though because black people were still treated poorly, and there were places that was white people only such as hospitals, schools, bathroom, and more.

The east end of the national mall