Select the physical barriers.

economics

mountains

religion

politics

oceans

deserts

One of your friends argues that he has seen two identical constellations, one in January and one in June. He says they are different because they were in different locations in the sky, even though they looked identical.

How much does a elephant weigh

How many Earths can fit in Neptune?

Name five countries that have a highlands climates? What physical feature is found in this area?

How did the diversity of Bosnia and Herzegovina's population contribute to the conflict there

Which of these has been the result of human activity? a) glaciers melt more b) volcanoes erupt more landslides happen more d) earthquakes happen more

Which types of stars have extremely intense gravitational and magnetic fields?

What happened in Russia as a result of actions taken by Peter the great

At independence, the most prosperous country of former French Western Africa was A. Chad B. Senegal C. Côte d'Ivoire D. Benin

Why is mexico city the capital of mexico?