After Muhammad's death in 632, Ali took his place as the Islamic leader.

What city was once a city of industry, but is now a symbol of urban decay?

What is the range of speed tsunamis consist of?

While in santiago you get a hankering to become a south american cowboy (guacho), what mountain range would you cross to get to the pampas?

Why the antartica is desert

True or False: the nomadic Plains Indians slept in teepees that were made of buffalo hide simply because they relied on the buffalo for everything due to presence of buffalo all around them.

Describe how modern science operates and distinguish it from philosophy, pseudoscience, and religion. In recognition of these distinctions, what individual (s) and methods mark the beginning of Astronomy as a science?

What two tectonic plates caused the Himalayan mountains

The longest mountain range in North Africa is what?

Chemical weathering is noted by which of the following

What factor drove Great Britain to divide Ireland into two states in 1921?