1) When ___in arctic regions, the Aleuts construct igloos as temporary winter shelters.
2) Most substances contract when they freeze so that the density of a substance’s solid is ___of its liquid.
3) The mechanism by which brain cells store memories is ___clearly understood.
4) Desert animals ___a means of retaining moisture in such a hot, dry climate if they are to survive.
5) ___state of Wyoming is also known as the “Equality State” because Wyoming women were the first in the nation to vote.
6) Fructose is a monosaccharide sugar that is much sweeter ___.
7) Ground plans and contour maps of the Earth ___from aerial photographs.
8) By the middle of the twentieth century, painters and sculptors in the United States had begun to exert ___over art.
9) . ___millions of galaxies exist in the vast space outside the Milky Way.
10) The extent of the harmful effect of locoweeds on animals depends on the soil ___the plants grow.