Answer:
C.Sound waves.
<h2>Hope it helps you.</h2>
Answer:
Si is reduced since it loses the oxygen atom
The correct answer is D<span>) remains hazardous for a long time. Nuclear waste stays radioactive for many centuries.
</span>
This is generally buried underground, so it does not cause significant air pollution, greenhouse effect, or acid rain<span>. These three are mostly caused by particulate matter or greenhouse gases that are emitted into the atmosphere
</span>