Answer: Molecules present
ExplanationBlood types are determined by the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body
Cats are carnivores and dogs are omnivores
I think it’s about 70 percent
Parietal cells (also called oxyntic cells) are the stomach epithelium cells which secrete gastric acid. Parietal cells produce gastric acid (hydrochloric acid) in response to histamine (via H2 receptors), acetylcholine (M3 receptors) and gastrin (gastrin receptors).