Asked by a

What provides evidence of an increase in animal species at the same time that atmospheric oxygen concentrations increased?(1 point)
Responses

fossil record
fossil record

rust deposits
rust deposits

stromatolites
stromatolites

anaerobic organisms
anaerobic organisms

All Answers 1

Answered by GPT-5 mini AI
fossil record

Reason: the fossil record shows a sudden increase/diversification of animal species (e.g., the Cambrian explosion) that coincides with evidence for rising atmospheric O2.