What part of the larynx covers the laryngeal inlet during swallowing to keep food out of the lower respiratory passages?

Apart of the periodic table is shown. a portion of the sixteenth and seventeenth columns of the periodic table is shown. column 16 reads eight oxygen, 16 sulfur, and 34 selenium. column 17 reads nine flourine, 17 chlorine, and 35 bromine. which of the following elements is less reactive than the others? bromine (br) oxygen (o) selenium (se) sulfur (s)

Why do we perceive objects as retaining their brightness under different lighting levels?

Which enzymes break down carbohydrates?