16. The largest particle still considered as sediment is ----------------------------; the smallest is ---------------------------------. a. cobble, silt. b. cobble, sand. c. boulder, sand. d. boulder, clay. 17. The study and description of layered sedimentary deposits is called: a. sedimentology.
Benjamin Davis, Sr., was born just as the Reconstruction period was ending in Washington, D.C. He attended the all Black M Street High School, where he received his first military training, liking the discipline and order.
Benjamin Banneker (1731-1806) was an African-American mathematician, surveyor, astronomer, and publisher of a popular almanac. Banneker wrote a now-famous letter to Thomas Jefferson on August 19, 1791, arguing eloquently that ...however variable we may be in Society or religion, however diversifyed in Situation or colour, we are all of the Same Family, and Stand in the Same relation to him [God].