An unconformity can be described as which of the following? select all that apply. a.) a gap of time between rocks or layers b.) rock layers that do not contain any fossils c.) an intrusion that cuts through a rock or rock layers d.) an erosional surface separating younger strata from older rocks

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.