1. The Leyden jar was one of the earliest form of condensers invented to store an electrical charge.

2. Wildlife conservationists say the cover that foliage provides for animals is equal in importance to the food supplying .

3. In 1941 Orson Welles produced Citizen Kane a film noted for its technical brilliant , structural complexity, and Literate treatment of a controversial biographical subject.

4. The diamond is the only gemstone composed with just one chemical element , carbon.

5. Chied Joseph La Flesche, a vigorous Omaha leader, worked hardly to make his nation a proud and progressive one .

6. The most safest way to watch a solar eclipse is for one to look at it in a mirror while wearing dark glasses.

7. Despite resistance in some parts of Canada, the conversion to metric measurement have been said to be largely successful.

8. Varieties of yellow grapes that have tender skin, rich flavor and high sugar content are especially suited with making raisins.

9. In meteorology, either the formation of clouds and the precipitation of dew, rain, and snow are known as condensation.

10. The newer kinds of seeds produce corn it has much greater food value than older kinds.

11. The particles comprising a given cloud are continually changing , as new ones are added while others are taking away by moving air .

12. The Great Potato Famine in Ireland in the 1840’s caused an unprecedented numbers of people from Ireland to immigrate to the United States.

13. The United States National Labor Relations Board is authorized to investigation allegations of unfair labor practices on the part of either employers or employees.

14. Because of various gift-giving holidays, most stores clothing in the United Sates do almost as much business in November and December as they do in the other ten months combined .

15. A fever is caused which blood cells release proteins called pyrogens, raising the body’s temperature .

16. After flax is washed, dry , beaten, and combed, fibers are obtained for use in making fabric.

17. Photograph was revolutionized in 1831 by the introduction of the collodion process for making glass negatives.

18. Gravitation keeps the Moon in orbit around Earth and the planets other of the solar system in orbit around the Sun.

19. In 1860, more as 90 percent of the people of Indiana lived rural areas, with only a few cities having a population exceeding 10,000.

20. The thirteen stripes of the United States flag represent the original thirteen states of the Union, which they all were once colonies of Britain.

21. In 1908 Olive Campbell started writing down folk songs by rural people in the southern Appalachian mountains near hers home.

22. The rapid grow of Boston during the mid-nineteenth century coincided with a large influx of European immigrants .

23. The symptoms of neumonia, a lung infection, include high fever, chest pain, breathing difficult , and coughing.

24. The flowering of African American talent in literature, music, and art in the 1920’s in New York City became to know as the Harlem Renaissance.

25. A gene is a biological unit of information who directs the activity of a cell or organism during its lifetime.