What causes a comet's tail to form?

solar wind

entering Earth's atmosphere

reflection of light from the moon

impact with a planet

What was Mao Zedong's vision to move China from agriculture to industry called?

Which of the following areas is best suited for livestock ranching? A. Coastal zone B. Drier climate C. Tropical regions D. mountainous regions

1. Define half-life.

What percentage of the earths volcanoes are shield volcanoes?

What can you conclude about prevailing winds from their name?

Which of these remains unchanged during the compaction of sediments? A) mass. B) color. C) volume or D) pore space

The Treaty of Rawalpindi established Afghanistan's independence in 1919 from which of these nations? A. Kazakhstan B. The United Kingdom C. India D. Russia

Which jet stream affects weather in South Africa? A. the northern subtropical jet stream B. the southern subtropical jet stream C. the northern midlatitude jet stream D. the southern midlatitude jet stream

How is the orientation of earth's magnetism record in rocks on the ocean floor? a) rocks align themselves to earth's gravitational feild b) earth's magnetic orientation is locked into rock when the rock cools c) all rocks have the same magnetic

Explain why coastal cities are more likely to have moderate temperatures than cities that are in the center of continents.