<span>The ring of muscles that guards the opening between the stomach and the duodenum is the </span>pyloric sphincter
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But in a molecule of DNA you can find four nitrogen-containing nucleobases: cytosine, guanine, adenine, and thymine. It also contains a sugar called deoxyribose and a phosphate group.
The ideas presented by this theory cannot be tested through experiment and observation. creationism states that universe and life originated from the acts of divine being who religious normally refers as God. opponents of this theory have suggested that life came to existence as result of natural processes but not through divine intervention. they refute ideas of creationism because who support it have failed to perform experiments to prove how life was created by God.
