1) With affection and humor, poet Phyllis McGinley _____ of ordinary life.

2) Scientists think _____ helps some tree to conserve water in the winter.

3) The ancient Hopewell people of North America probably cultivated corn and _____ crops, but hunting and gathering were still of critical importance in their economy.

4) Lunar eclipses occur each time the Earth blocks the Sun’s light from the Moon _____ the Moon’s full phase.

5) _____ all data into electronic pulses.

6) _____ reaches the cells of the body, it is oxidized, or slowly burned.

7) The position of the larynx, or voice box, in the neck determines _____ , swallows, and vocalizes.

8) The slide rule uses sliding scales with marks _____ numbers and their logarithms.

9) _____ executive and administrative authority in the United States government rests with a President who is elected for a four-year term.

10) _____ stereophonic phonograph records, two recordings are made of the same musical performance.

11) _____ to space travelers is high acceleration or deceleration forces.

12) Organic chemistry has made many new products _____ .

13) Perfectly matched pearls, strung into a necklace, _____ a far higher price than the same pearls sold individually.

14) Some metropolitan newspapers would make sizable volumes _____ in book form.

15) Pennsylvania ranks high among the states population _____ many areas are sparsely settled.