Answer:
measuring seismic wave activity
Explanation:
the earths interior is made up of a number of layers such qs the crust, mantle, outer and inner cores.
Answer:
It’s almost impossible to ignore the impact that “soccer” has on different countries, around the world. In America, winning or losing a football match isn’t life or death. But the rest of the world feels differently. In fact, football — as it’s known everywhere else around the world — can mean life or death.
The influence of football on a country’s people doesn’t always result in a favorable outcome, though. In North Korea for example, the outcome is public shaming.
It isn't exactly known who discovered it first, but the earliest claim of earth being round rather than flat was posed by Pythagoras sometime around 500 B.C. He argued that if the moon was round the Earth should be as well.
After that, his claim was proven true by a man named Anaxagoras at around 500-430 B.C when he brought up solar and lunar eclipses. The shape of Earth's shadow on the moon was also used as evidence that the Earth was round.
And finally, in 350 B.C the great Aristotle declared that the Earth was a sphere based on constellations you can see if you travel farther from the equator. Over the next hundred or so years, Aristarchus and Eratosthenes actually measured the size of the earth.
Short answer: The Greeks
