16. Ceramics can be harder, light, and more resistant to heat than metals.

17. Not everyone realizes that the most largest organ of the human body is the skin.

18. Mold is extremely destruction to books in a library.

19. A tapestry consists of a foundation weave, called the warp, which across are passed different colored threads, called the weft, forming decorative patterns.

20. Perhaps humans’ first important musical influence were the songs of birds.

21. The techniques of science and magic are quite different but their basic aims to understand and control nature—they are very similar.

22. It was in a cave near Magdalena, New Mexico, when the oldest known ears of cultivated corn were discovered.

23. Most modern barns are both insulated, ventilated, and equipped with electricity.

24. Sharks can detect minute electrical discharges coming from its prey.

25. A dark nebula consists of a cloud of interstellar dust enough dense to obscure the stars beyond it.

26. The various parts of the body require so different surgical skills that many surgical specialties have developed.

27. One reason birds have been so successful is because of their able to escape from danger quickly.

28. Chemical engineering is based on the principles of physics, chemists and mathematics.

29. Ballet performers must be believable actors and actresses as well as experts dancers.

30. Chemical compounds with barium, cobalt, and strontium are responsible to many of the vivid colors in fireworks.

31. The work of the early American woodcarvers had many artistic qualities, but these craftsmen probably did not think of  them as artists.

32. Louise read the book very thorough, but she performed poorly on the test.

33. If your interested in pleasing customers, don’t make them wait for service.

34. Each of the managers want to renew her contract before the new fiscal year.

35. The city doesn’t need no more taxes; everyone pays too much already.

36. In contrast to its soft body and muscular feet, some mollusks have hard shells.

37. In 1963, Betty Friedan’s expose of domesticity, The Fem- inine Mystique, became an immediate bestseller and creating a national sensation.

38. Homesteaders on the Great Plains brang few possessions to their new home.

39. Less people stood in line for the concert, even though there were more tickets available.

40. Of the three girls that recently joined the basketball team, Frieda is the tallest.