My guess would have to be hydropower, since water isn't an un natural substance
Dusting.......
HOPE it helps!!!!!
Dolphins sleep with one eye open
Answer: si un objeto A ejerce una fuerza sobre un objeto B, entonces el objeto B debe ejercer una fuerza de igual magnitud en dirección opuesta sobre el objeto A.
Explanation:
The oceanic plate melts and forms magma and sinks back into the mantle. The magma can erupt through the continental plate like a volcano. so in other words it would be volcanoes