Answer:
New Madrid earthquakes are centered in a plate interior, meaning they were intraplate earthquakes.
Explanation:
The 1811-1812 new madrid earthquakes were different from most california earthquakes because the New Madrid earthquakes were centered in a North American plate interior caused by stress within the plates.
The New Madrid earthquakes often referred to as the "Tecumseh's Comet" was the biggest earthquake in America history.
The answer is shown below:
"The diurnal motion" of the stars is defined as the apparent daily motion of stars around the Earth. The cause for this "apparent motion of stars" was proposed by Heraclides (who was a Greek philosopher and astronomer). He afirmed that this was created by the Earth's rotation on its axis, which is completed in 23 hours, 56 minutes and 4.09 seconds.
If what your trying to ask is what does it mean its calcium