Once food has reached the sea floor, currents carry this food and organisms filter it without having to use their own energy to go and get food. Another way organisms use energy is by coming out at night and rising to feed on upper-level organisms.
Physical Science redirects here. It is not to be confused with Physics. Physical science is a branch of natural science that studies non-living systems, in contrast to life science. It in turn has many branches, each referred to as a physical science, together called the physical sciences.
Physical science graduate degrees are rarer, but they do exist. Read the following articles to get more details regarding degree options in this field of study. 1  Bachelor of Science in Physical Science. 2  Bachelor's Degree in Geology. 3  Bachelor's Degree in Oceanography. 4  Master of Science in Physics. 5  Ph.D. in Chemistry.