Why is there more pressure at each layer going toward the center of the earth?

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?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand

What two advantages do the coastal countries of west africa have over the sahel countriesfertile soil and mineral resources temperatures and terrain human resources and natural resources weather patterns and location