Answer | Crossword Clue |
---|---|
MINE | Underground coal source |
coalfields | An extensive area containing a number of underground coal deposits |
coalfield | An extensive area containing a number of underground coal deposits |
OILDEPOSIT | Underground petroleum source |
AQUIFER | Underground water source |
WELL | Underground oil source |
FAULT | Source of an underground movement? |
geohydrology | a science that deals with the character, source, and mode of occurrence of underground water |
geohydrologies | GEOHYDROLOGY, a science that deals with the character, source, and mode of occurrence of underground water |