If an unconformity exists between these two layers of fossils, which statement is true? A. It could be hard to reconstruct the habitat that existed between the times when the fossils in each layer lived.
B. Some of the fossils in the lower layer might be the same age as some of the fossils in the upper layer.
C. The organisms fossilized in both the top and bottom layers lived in the same habitat.
D. The fossils in the top layer are older than those in the bottom layer.

Why would nations in latin america be part of a mostly arab cartel group known as opec? a) latin america refused to do business with countries that were not part of opec. eliminate b) natural resources such as oil are a major economic development for some latin american countries. c) latin america has a long history of distrust of the united states and fears a take-over of oil fields. d) latin american nations such as venezuela needed in getting natural resources to other parts of the world. 15