Which astronomer developed the three laws of planetary motion?
What will be an ideal response?
Johannes Kepler
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The main effect of modern communications on social customs has been to
A) preserve folk cultures, by increasing awareness of their uniqueness. B) stimulate the diffusion of folk cultures around the world. C) increase the similarity of social customs in different locations. D) have little effect on the diffusion of social customs. E) slow the rate of change.
Which of the following would be classified as an aerosol?
A) Water vapor B) Ragweed pollen C) CFCs D) Gasoline fumes
What are some of the political, cultural, and environmental factors that make the Golden Triangle a major source of illicit drugs?
What will be an ideal response?
The thin, outer layer of Earth, from 7 to 40 km in thickness, is called the ________
Fill in the blank(s) with correct word