Cómo se subdivide el espacio marítimo

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

Which barrier to economic development is shown in the following examples?

The distance a car travels between the time the driver decides to stop the car and the time the driver puts on brakes is called the reaction distance. how does the reaction distance change with speed? a.reaction distance decreases with with speed b.reaction distance stays the same with speed c.reaction distance increases with speed. d.there is not enough information to answer the question