A depression on the surface of the land caused by the collapse of a cave roof is a Blank.

A) valley

B) sinkhole

C) mound

Which of the following did not contribute to the creation of the united states A) taxation without representation B) the idea of popular sovereignty C) the separation of church and state D) the desire for self-government

Forming outside, on the surface of Earth's crust

How are volcanoes and earthquakes linked to plate tectonics?

Which of these major economic activities has traditional roots in Central Asia? Tourism Rasing livestock Wheat production Oil drilling

Scientists believe that the earth is millions of years older than the oldest rocks found on its surface. One reason they believe this is because

How high does the earth's atmosphere extend? A. 100 m B. 1,000 m C. 10 km D. 100km

How to grow plants in space?

Based on this map of oil imports, which nation imported the greatest number of oil barrels each day in the years before 2006? A. China B. Australia C. Canada D. the United States

How far will a P-wave travel in 9 min 20 sec?

The land in Mexico City is sinking. What is the primary cause of this problem? A. deforestation caused by cutting down trees B. too much water being taken from underground aquifers C. too many offices and towers being built in the city D.