It is an example of Cyclical unemployment. hope i helped!
Astronomer Edwin Hubble classified galaxies<span> into four major types: spiral, barred spiral, elliptical and irregular. Most of the nearby, bright </span>galaxies<span> are spirals, barred spirals or ellipticals. Spiral </span>galaxies<span> have a bulge at the center and a flattened disk containing spiral arms.</span>
C. less dense as it gets colder and less salty
Mutualism interaction do both species benefit?
