Answer:
how old the star is
Explanation:
because starts existed before any human beings walked the earth
hope i helped
Answer:
510
Explanation:
Recurrence interval involves the average estimated time or average spacing between events. It helps to estimate the time probability of an event taking place.
Calculating the recurrence interval we have:
![[(820 - 260) + (1200 - 820) + (2100 - 1200) + (2300 - 2100)] / 4](https://tex.z-dn.net/?f=%20%5B%28820%20-%20260%29%20%2B%20%281200%20-%20820%29%20%2B%20%282100%20-%201200%29%20%2B%20%282300%20-%202100%29%5D%20%2F%204%20)


After the calculations, the recurrence interval of the earthquake that caused the disruption is 510 years.
<span>Magma that squeezes into a horizontal crack is called a sill. Magma that squeezes into a vertical crack is called a dike. Both are considered to be rock intrusions wherein magma seeps into the cracks of old sedimentary rock formations. The difference is that sills are tubular and horizontal in nature, while dikes are vertical in nature.</span>