Bisphenol A is most often found in ________
A) metals B) plastics C) wood D) glass
B
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The matter and energy laws tell us that we can recycle ____.
A. both matter and energy B. neither matter nor energy C. matter but not energy D. energy but not matter E. nothing and everything
How is a pothole formed?
A. Through deposition of sand on the inside curve of a meander B. By the saltation of individual sand grains on a muddy stream bed C. Because of the chemical weathering of rocky banks by acidic river water D. Through the swirling, scouring action of pebbles on a hard stream bed E. Through erosion of a muddy bank on the outside curve of a meander
A usually dry, very flat clay surface at the bottom of a desert basin is a kind of ____________________
Fill in the blank(s) with correct word
Deoxyribonucleic acid (DNA) contains billions of atoms and is very large. It would be considered a(n):
A. Isotope B. Element C. Mega-atom D. Compound E. Enzyme