What discoveries in the fossil record led to questioning the concept that species didn't change?
A) the oldest layers contain fossils of simpler organisms
B) more recent layers contain fossils more similar to existing species
C) many fossils were found of extinct animals
D) more recent layers contain fossils that are more complex than earlier ones
E) all of these are discoveries in the fossil record that led to questioning the concept that species didn't change

Question

Quizplus · Accepted Answer

All of the discoveries listed in options A, B, C, and D led to the questioning of the concept that species didn't change. The presence of simpler organisms in older layers and complex organisms in more recent layers indicated a gradual change in species over time. The discovery of many fossils of extinct animals suggested that species can go extinct, which is a form of change. Overall, the fossil record challenged the view of species as fixed and unchanging.

What Discoveries in the Fossil Record Led to Questioning the Concept