Which audience did Martin Luther King Jr. most likely target when writing this letter? A. people who supported his work
B. people who lived in the North
C. people who fought for civil rights
D. people who questioned his methods

All of the following are examples of sedimentary rocks except? a) sandstone made of small pieces of sand cemented together b) coquina made of small shells cemented together c) shale made of small silt particles cemented together d) quartzite, or sandstone that has been subject to high pressure and heat over time