Using sonar in an ocean environment, you can determine how far below you are from reaching the bottom, or if something bigger picks up, say a whale, which in turns lets you know something big is beneath you. It helps determine how far you are under the water as well.
I know that number 2 is ATP. Adenosine triphosphate (ATP) is a nucleoside triphosphate, a small molecule used in cells as a coenzyme. It transports chemical energy in cells.
Spina bifida; occurring in three forms listed from mildest condition to most severe; occulta, meningocele, myleomeningocele
Although they flow near the bottom of the ocean, deep currents sometimes flow on top of other currents. while surface currents flow near the top of the ocean where they can reach depths of several meters. Some of the factors that control deep currents are salinity, density, and temperature. Deep current they occur deep in oceans which are influenced by salinity, temperature, and water.
A good example of deep current is Antarctic bottom water.
I say A because the way the question is formatted it is clear that...
