A dog is pulling on a leash while walking down the sidewalk. What frame of reference would
indicate that the dog is not moving?
A. A nearby building
B. A tree
C. The leash
D. The sidewalk

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.

Energy flows from the producer level to the level. is called

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline