I believe it is geographic isolation. Hope it helps.
Answer:
C. antigen-antibody reactions
Explanation:
human blood group is determined by the presence of antigens on the red blood cells which are specific proteins.
so specific antibodies are used against these antigens to determine the type of blood group after the reaction.
Answer:
<em>Loam <u>is the fourth type of soil</u>. It is a combination of sand, silt and clay such that the beneficial properties from each is included.</em>
Answer:
Nuclear power plants produce no carbon dioxide emissions, but they do generate greenhouse gasses.
:)
