Epiglottis
The epiglottis is a flap of cartilage the covers the entrance to the throat protecting the lungs from obstruction. It moves when we swallow to allow food in.
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Fragmental sedimentary rocks include shale, sandstone, conglomerate, <span>salt, </span><span>breccia, </span><span>limestone, </span><span>chert, </span><span>dolomite, coal, </span><span><span>siltstone, and gypsum.
As you can see, Gneiss is not listed among examples of fragmental sedimentary rock. So your answer is B.
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Th3 catalysts will decrease thw activation energy of a reaction
The
Thymocyte progenitors enter the subcapsular region of the thymus as
double-negative cd3- t cells where the double negative refers to lack of
cluster determinants CD4 and CD8. Double-negative cd3- t cells exist as small population
that is 1%-5% of lymphocytes in the lymphoid organs and peripheral blood of
humans and normal rodents.
To describe the process whereby bacteria on the teeth metabolize carbohydrates producing tooth-damaging acids is used the term tooth (or dental) decay. It is a tooth demineralization process that occurs when a tooth is exposed to an acidic environment of pH 5.5 and below. The primary food source for cariogenic (cavity-causing) bacteria is dietary sugars.Suggestion is to b<span>rush and floss promptly after eating so to insure that dental plaque is not present on your teeth.</span>