Two reason friction occurs between surfaces

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

True or false: the revolution of the earth creates day and night as it rotates around the sun

The two required components for a generator are