The principle of superposition which states that in undeformed rocks, the younger rocks will be on top of older rocks, is particularly important because

The large connected urbane area from boston to washington, d.c. is often referred to as

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

What are the similarities and differences in the way geologists and biologists approximate the age of the earth? justify your response in two or more complete sentences.