The air for sure. Water has a high specific heat which means it takes longer to cool down in temperature. Hope this helps :)
Answer:
It depends on the question
Explanation:
Scientists<span> can tell by observing the seismic waves that are recorded all over the surface of the </span>earth<span> from distant earthquakes. The seismic waves are reflected (bounced off) </span>layers<span> of different density, and they are refracted (bent) when they enter </span>layers<span> of different density.</span>
