How is an earthquake magnitude scale related to the amounts of energy released by earthquakes?

Shanti wraps the gift she is taking to a friend's birthday party. she doesn't have very much paper, so she does not overlap any of the edges. how much paper did it take to cover the gift?

Why are shark population in decline worldwide?

Why are all maps distorted? when reading a map, why is it important to check the legend? what is the difference between longitude and latitude? identify the meridian at 0° longitude and the parallel at 0° latitude.