Which of the following is true about waves?
a) they always move matter
b) they are always visible
c) they carry energy
d( they can only travel though outer space

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above

Which composition of water moves to begin a deepwater current?

What does the law of conservation of mass state?