Why might ancient astronomers have been convinced that the sun and moon revolved around earth?

What percentage of rain falls in dry deserts

Which of the following is an advantage to having a common currency in the European Union?

5. What city is the "spiritual home' to 3 of the world's major religions? What religions are those?

When the earth was large enough, it is believed to have separated into layers with the densest layer in the center (the core), the next dense layer in the middle (the mantle), and the least dense layer at the surface (the crust).

Why does Neptune take 165 earth years to revolve around the sun, while Jupiter only needs 11.9 earth years to do so.

Fault lines are: the crust of the lithosphere that has fractured along plate boundaries and ridges the crust of the athenosphere that has fractured along plate boundaries and ridges the crust of the biosphere that has fractured along plate

Which US region historically has been dependent on the Entertainment, software and aerospace industries as a part of its economy?

What is the life expectancy of a plastic bags

What is rain useful for? Why does it rain?

in which glossary would you expect to find a listing for the critical vocabulary words that are highlighted in each section