How old is earths crust?

What effect does an increase in atmospheric carbon dioxide, the most common greenhouse gas, have on global warming?

Which type of rock is formed by magma erupting from a volcano? sedimentary igneous metamorphic pyrolite taconite

Which type of earth scientist was most receptive to Wegener's ideas? A. Seismologists (earthquakes and deep earth) B. Petrologists (igneous rocks) C. Geomorphologists (landscape shapes) D. Paleontologists (fossil organisms)

The success of the English colonies stems from all the following except A. the abundance of natural resources B. the discovery of gold C. the fertile soils D. the location near the ocean and lakes E. ties to England

After railroads the next revolution of transportation came with the development of the?

The climate of the United States can be best Described as. A. mostly arid B. mostly tundra C. Mostly Temperature D. Mostly tropical

Who is Nathaniel Greene

Who was one of the founders of the location-sharing site Foursquare? Dennis Crowley Aaron Swartz Josh Williams Scott Raymond Done answer A.

What are dry docks and what happens there? (3)

A boy wins a trip. The first thing he notices when he arrives is the cold temperatures and the thick coniferous forests. It snows during his visit. The area averages 35cm to 100 cm of precipitation per year.