Answer: Calcite, aragonite, vaterite
Explanation:
Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
Answer:
How Does the Immune System Work?
Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection. ...
Adaptive immunity: Adaptive (or active) immunity develops throughout our lives. ...
Passive immunity: Passive immunity is "borrowed" from another source and it lasts for a short time.
Answer:
There you go! they explained it better than I could. hopefully that helps you, for more information you could simply look up an article.
