Answer: Economic
Explanation: HOPE THIS HELPED!
Answer:
D. 
Explanation:
Let be a circle with a radium of 4.9 meters. The formula to determine the area of the circle is:

Where:
- Radius, in meters.

The area of the circle is:

Metallic minerals become concentrated in liquid magma due to igneous, hydrothermal processes.
When magma forms first, it cools down and sink. The minerals concentrate at the top forming hydrothermal fluid.
Answer:
False
Explanation:
When clouds form, it's essentially a condensation process. This releases energy into the air rather than taking energy in since bonds are being made, they are not being broken.