<span> </span><span>The results of new evidence can lead to changes in scientific knowledge.</span>
Eye protection, fire proof clothing, proper foot gear, just anything that you could prevent yourself from being burned because you are working with flammable materials.
Density = Mass ÷ Volume
D= 30g ÷ 6 cm^3
D= 5 g/dm^3
At almost the opposite point on the Earth's surface, the "P" waves reappear. The shadow zone exists because the waves are refracted as they pass through the boundary between the mantle and the core and are diverted from their original paths.