Apiece of cartilage called the closes over the top of the larynx during swallowing to direct food and liquids into the esophagus.

What did the first language sound like

Does the sun release radiant energy?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere