Scientist can measure the depths of crayers on the moon by looking at pictures of the shadows. the length of the shadow cast by edge is 500 meters. the angle of elevation of the rays of the Sun is 55 degrees estimate the depth of the crater

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

Most of the volume of an atom is occupied by the

What are the north and south poles of a solenoid change with?