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?

The ciriculation of water from Earth's surface to the atmosphere and back is called

Which of the following are characteristics of a state? Check all that apply. A. there are at least 500,000 people. B. there is a government ruling land and people. C. there is power over the people. D. the land is populated with a group of people.

Hich country in Central Asia is able to practice dryland farming? a. Turkmenistan c. Kazakhstan b. Uzbekistan d. Kyrgyzstan

Most likely resource to be found near the base of a volcano on Earth's surface A. Coal B. Metal Ore C. Petroleum D. Water E. Wind

The earth's continents are always moving and shifting. True or False

How did our exploration of the moon differ from that of mercury (and the other planets) ?

Which statement about the location of the Baltic states is not true? They have access to trade with large countries. Their remote location has kept out invaders. They have ports on well-traveled sea routes. Their climate is mild due to ocean breezes.

What ocean zone is below the Abyssal Zone?

How much of egypt fertile farmland was located in the nile delta?

What sea surrounds Jamaica?