Sedimentary rocks record past geological events and .

Earth’s circumference and diameter in the past

written history

astronomical milestones of the past

changing life forms of the past

a and b because with the other three, they simplify to something else.

the part i "agree with' is " it should not matter what color their skin is or what their cultural beliefs are." but for the main part i agree with it all or if cause now and days there are some people don't get the job cause there skin color and there beliefs and some times they don't even get the same repest as white people. we are all equal.