Houston to Los Angeles, vice versa, is a 22 hour and 6 minute drive, and 1,546 miles apart from each other.
D. Islands used for agriculture
The difference between the two mentioned magnitudes is 4.
A magnitude 1 earth-quack is 10000 times bigger than a magnitude -3 earth-quack. On the other hand, it is 1000000 times stronger in terms of energy release.
Note: To calculate the difference in energy between two earth-quacks, first you calculate the difference between their magnitudes and then you raise 10 to the output you obtain.
O=height of monument
tan32= O/405
O=tan32/405
height of monument=0.0015 ft.