Sediments and rocks that are moved around by agents of erosion, tell us the history of where they started. If the White Cliffs of Dover in England, were once sea shells, what does that tell us about what happened in the past in that area?

the answer is c) an oak tree

      n

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called