Draw a ray diagram to show image on a concave mirror, between C and of​

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.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Which planet do you think would be easiest for humans to colonize some day?