Answer:
Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. The seismic waves are bent, sped up, or slowed down, or even reflected when they pass through the earth's layers.
Explanation:
Scientists are able to understand Earth's interior by studying seismic waves. ... Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth's internal structure.
Mars had the closest density to moon, one being 3.9 and the other 3.3
Answer:
understanding the structure of the earth is important to developing the ecosystem and allowing favorable conditions to occur naturally
Answer:
C.
Explanation:
It is because of previous migrations to imperial capitals. There aren't a lot of people moving to London now but in the 1800-1900s there were Indians and Africans coming to seek a better life under English rule but countries in both of those regions were also controlled by Britain.
