Its important because it tells us the difference between populations and individuals
They have to have a higher density than water to have the ability to stay on the sea floor. Otherwise they would just float to the surface of the water
Immune System is the system that consists of proteins and cells.
The
two categories that are used to classify physical changes are Reversible and
Irreversible.
Reversible
means that the matter can convert to gas, liquid and solid and then convert
back to gas, liquid or solid. So it means it can convert back and forth.
<span>Irreversible
means that matter cannot be converted back as it is before.</span>
