As pressure increases the reaction rate will increase because

less space for molecules to be, Pressure and Volume are indirect so less volume, and there according to collision theory they will hit into each other more

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

the answer is b & c i believe : )