I would have to say A. All answer choices are hazardous risks
The Earth's crust and upper part of the mantle are broken into large pieces called tectonic plates<span>. ... The </span>plates<span> move because of </span>convection currents<span> in the Earth's mantle. These are driven by the heat produced by the decay of radioactive elements and heat left over from the formation of the Earth.
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Answer:
D
Explanation:
It says an unintentional all the other people did on purpose