- Life Sciences
a molecule found inside red blood cells that can carry both oxygen and carbon dioxide.
when the entire heart, both of the atria and ventricles, is relaxed.
two or more forms of a particular chemical element, that have the same number of protons in the...
a general term form any plant diseases caused by different bacteria and fungi.
an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in...