Which is the following is an example of liquid surface water? A zone of saturation
B) aquifer
C) lake

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

What geologic process is related to caldera formation?

Suppose that the sun shrank in size but that its mass remained the same. what would happen to the orbit of the earth?