Ridges and Trenches are both formed due to tectonic plate boundary movementboundaries form ridges and formtrenches.

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?

What is associated with mid-ocean ridges?

The impact of a large asteroid comet with earth has been proposed to have caused the extinction of the dinosaurs. the impact site of this comet is in or near