Answer
Cretaceous: Decreased Oxygen, Increased Carbon Dioxide, Decreased pH, Increased Sulfur Dioxide, Ocean Acidification, Sea Levels Rise & Fall
Triassic: Decreased Oxygen, Changing Sea Levels, Increased Carbon Dioxide, Decreased Carbon Dioxide, Increased Sulfur Dioxide
End Permian: Decreased Oxygen, Increased Carbon Dioxide, Decreased Carbon Dioxide, Increased Sulfur Dioxide, Ocean Acidification
Late Devonian: Decreased Oxygen, Changing Sea Levels, Increased Carbon Dioxide, Decreased Carbon Dioxide, Increased Sulfur Dioxide
End Ordovician: Decreased Oxygen, Changing Sea Levels, Increased Carbon Dioxide, Decreased Carbon Dioxide, Increased Sulfur Dioxide
Anthropocene: Decreased Oxygen, Changing Sea Levels, Increased Carbon Dioxide, Decreased Carbon Dioxide, Increased Sulfur Dioxide, Ocean Acidification, Sea Levels Rise & Fall