Weathering, erosion, and deposition can lead to the formation of

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Where do magnetic lines of force enter earth?