Where is the place an earthquake actually occurs underground called? what is the central point of the earthquake on earths surface called?

The most common economic system in the world is aclosed economy. command economy. mixed market economy. traditional economy.

Based on their location in the atmosphere, the layers are able to have their own special characteristics. for example, most weather occurs in the troposphere. what occurs in each of the other layers?

Uranium is a mineral which is used to generate electricity. predict and explain the long term effect on the environment of obtaining and using uranium as a source of energy.