Iron ore and coal are two important natural resources found in the great lakes region.

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

Why is terracing used in southeast asian agriculture?

Look at the diagram showing the different wavelengths in sunlight. which statement describes electromagnetic waves with wavelengths greater than 700 nanometers? they take the form of heat. they can cause skin cancer and sunburn. they are some of the shortest waves. they can be seen by human eyes as visible light.