Which of the following structures are regions of the lungs?
a. cilia, adenoids, mucous, epiglottis
b. frontal, maxillary, sphenoidal, ethmoidal
c. eustachian, pharynx, bronchi
d. apex, base, hilum

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Drag each tile to the correct box. match the given symbol or molecular formula to the term that best describes it. element -organic compound -inorganic elemental molecule -inorganic compound -answers given: so2, k, ci2, c6h6