According to the nebular hypothesis, how did most of the excess dust and gas in the solar system get removed?

Why is a nation important

What is the most important natural resource in the Middle East? A. coal B. lumber silver D. oil

Which continents are most densely populated?

What is liquid rock on Earth's surface called? A. soil B. erosion C. magma D. lava

The closest star, other than the sun, to earth is Alpha Centauri, which is 2.57 x 1013 miles from earth. The farthest star that can be seen with the naked eye is V762 Cas which is 9.57 x 1016 miles from earth.

Describe the Great Barrier Reef. Why is this site considered one of the world's most important ecosystems?

The diameter of a circle is 5.5m. Find the area of the circle. Give the exact value

Which of the following clouds has the highest base? a. stratocumulus b. cirrocumulus c. altocumulus d. nimbostratus

What kind of map will show you where communist governments are located in the world?

Russia is located in a ___ biome