Geodesists define the geoid as:. a. a mathematical shape that lies just below the lowest point on Earth. b. the gravitational surface upon which water would rest. c. the reference point for geodetic surveys. d. the coordinate system by which land parcels are subdivided.

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph