Examlex
Calculate the approximate number of seconds that a(n) 30-year-old student has lived.
Volcanic Eruptions
The violent expulsion of magma, ash, and gases from a volcano, often associated with lava flow and pyroclastic debris.
Topography
The general configuration of a surface, especially the land surface or seafloor, including its elevation, relief, and features; shape of the land.
Water Chemistry
The study of the chemical compositions, properties, and reactions of water, especially its behavior in natural and polluted environments.
Groundwater Chemistry
The study of the chemical characteristics and reactions of groundwater, including dissolved minerals, pollution, and the movement of contaminants.
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