Explain why one hemisphere has spring at the same time the other hemisphere has autumn.

What gives quartz its many colors?

Which of the following statements about natural disasters in the United States and Canada is false? A. More tornadoes occur in the United States and Canada than in any other region. B.

Explain on a complete sentence why it is important for scientific to share information whit one another

Explain how the elements present on the surface of a star can be identified using bright line spectra

Which of these is not an environmental effect of destroying wetlands A. loss of habitat B. increased air temperature C. poor absorption of rain water D. unfiltered water

In Wegener's view, what caused mountain ranges to form? A) volcanoes B) Earth shrinking C) meteorite impacts D) continents colliding

Which of the following is TRUE? A. Customs unions require the creation of a common currency. B. The European Union is a shallower and broader form of integration than NAFTA. C. A common market is more deeply integrated than a customs union. D.

What percentage of water vapor is found in the air? a. 0 to 1 percent b. 0 to 4 percent c. 0 to 8 percent d. 0 to 10 percent

In triangle ABC m∠A 25 m∠b = 55 and c=25 find b round your answer to the nearest tenth A. 10.7 B. 12.9 C. 48.5 D. 20.8

Magma that reaches earth surface and flows from volcanoes