A magnetic survey can be used to explore for minerals that cannot be seen because the deposit is hidden underground.
Magnetic surveying is one of the methods used in archaeological geophysics.
This involves the measurement of and recording of Spartial variations in the earth's magnetic field.
Magnetic survey is also in search for mineral-bearing ore bodies or even oil-bearing sedimentary structures.
Learn more about minerals at brainly.com/question/538256
Answer:
Most Brazilians speak Spanish as their first language.
Explanation:
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B
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