<span>It helps scientists understand how populations and species react to changes in their environment, and this knowledge can be used to help these populations and species survive.</span>
Red blood cells are able to maintain homeostasis because they are bathed in blood, which is isotonic <span>to the fluid in the cells themselves.
</span>A solution is said to be isotonic when its effective osmole<span> concentration is the same as that of another solution.</span>
