Contamination of the environment with harmful substances is called

With an american government question

U.s. history i which statement is true? the missouri compromise ended slavery in the south. the compromise of 1850 eliminated slavery only in the south. the missouri compromise postponed the issue of slavery. the compromise of 1850 ended slavery in every region of the united states.

Who became a national hero when she refused to give up her bus seat to a white passenger in montgomery, alabama? a) rosa parks b) medger evers c) coretta scott king d) martin luther king jr.