erosion of sediment from a mountain range mass extinction of marine organisms formation of an ocean trench melting of polar ice caps
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Over geologic time, global mean sea level has varied significantly. Which change is most likely responsible for an increase in global mean sea level?
Possibilities:
- erosion of sediment from a mountain range
- mass extinction of marine organisms
- formation of an ocean trench
- melting of polar ice caps

melting of polar ice caps