Examlex
The precursor of the main active ingredient in aspirin is salicylic acid, which is obtained from the bark of oak trees.
Groundwater Chemistry
The study of the chemical characteristics and reactions of groundwater, including dissolved minerals, pollution, and the movement of contaminants.
Ground Surface
The top layer of the earth's crust that we walk on and interact with in our everyday lives.
Volcanic Gas
Gases emitted from a volcano, including water vapor, carbon dioxide, sulfur dioxide, hydrogen sulfide, and other volcanic gases.
Convergent
Pertaining to areas where tectonic plates move towards each other, often resulting in mountain building or subduction.
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