Answer:HI i believe that it is called an aquifer
Explanation:
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). Groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydro geology.
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Answer:
stethoscope is the instrument used to measure heart beat
When molecules uses energy for transportation across the cell, then it is known as "Active Transport"
So, option B is your answer.
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Please rephrase the question, it doesn't make sense.
