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Which of the following is NOT used to explore for groundwater?
Nitrogen
Nitrogen is a colorless, odorless, tasteless gas that makes up about 78% of the Earth's atmosphere, significantly used in fertilizer production, as a refrigerant, and as a replacement for air in tires to maintain stable pressure.
Confined Liquid
A fluid that is trapped or contained within a specific space or system, often under pressure.
Pascal
A unit of pressure in the International System of Units (SI), defined as one newton per square meter.
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