#Question id: 32311
#Unit 2. Cellular Organization
#Question id: 21274
#Unit 12. Applied Biology
#Question id: 3875
#Unit 3. Fundamental Processes
Splicing of introns in nuclear mRNA primary transcripts requires:
#Question id: 22975
#Unit 7. System Physiology – Animal
#Question id: 5017
#Unit 11. Evolution and Behavior
Arrange these events from earliest to most recent.
1. emission of lava in what is now Siberia at time of Permian extinctions
2. emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust
3. emission of lava that solidified at the same time as rusted iron precipitated from seawater
4. emission of lava in what is now India at time of Cretaceous extinctions