Hich type of surveying involves magnetometry, electrical resistivity, and metal detection? (from Plato course) A.
sample survey
B.
remote sensing
C.
shovel test pits
D.
aerial photography

Remote sensing

Explanation:

Remote sensing is a technique used in archeology in order to collect data without excavation. Since it doesn't require excavation it is non-destructive and very safe for whatever is under the soil. We can detect walls, pits, roads, and other structures with sound or radar impulses that pass through the ground and bounce off surfaces.

81 is a composite number.

answerthey are called the pampas;