The fossil record provides evidence of five mass extinctions. Scientists compare fossils found in rock layers to find evidence about how organisms were affected by extinction events. Which of the following images shows evidence of an extinction event? How are the bones in the fin structure of the Tiktaalik evidence of a transition from fish to amphibian?

Scientists use evidence from their findings to support theories of life on earth. Which of these findings could NOT be used to provide supporting evidence that life on earth has changed over time? *

A. increasing complexity of fossils in younger rock layers
B. increasing diversity of fossils in rock layers following an extinction
C. transitional fossils
D. rock layers with no fossils

Organisms with more complex body plans are more likely to be found in younger rock layers. This prediction is based on observed patterns of the increasing complexity of physical structures in organisms over time.

True
False
It is impossible to tell from this information.

PLEASE HELP