what do oceanographers use echo-sounding devices to study?

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent

Which of the following shows the correct order in which light information travels through the eye? (2 points) lens, pupil, retina, optic nerve pupil, lens, retina, optic nerve pupil, lens, optic nerve, retina lens, pupil, optic nerve, retina

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph