At the end of the Paleozoic Era, there was a mass extinction that wiped out over 90% of all species. What was the possible cause of this mass extinction and why did it cause so many organisms to become extinct?

What is the length of one degree of longitude at 28°N latitude?

Due to its large amounts of rainfall, Louisiana has A. the best plots of land in the country for growing crops. B. rising need for developing the proper irrigation methods. C. a higher population of people living near bodies of water. D.

Who believed that they could control all aspects of people's lives, including religion, jobs, products manufactured, and even thinking? A. Hitler B. Mussolini C. Stalin D. All

One question, even though scientists can predict when and where tornadoes may occur, why do these storms still catch people by surprise?

What are the different types of migration

In order to conquer Mexico, the Spanish

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)