Passage Summary: Dumping iron in the ocean might fix global warming, but since we don't know if it will mess up the water and the ocean is too important to risk, we shouldn't start doing it right away.

Conclusion: We should hold off on using iron-seeding to fight the greenhouse effect for the time being.

Reasoning: Although the plan could help the environment, we don't yet understand the potential negative side effects on the ocean, which is a vital resource.

Analysis: This is a 'caution first' argument that prioritizes safety and research over immediate action when a vital asset is at stake. The underlying principle is that you shouldn't implement a major environmental solution if you haven't fully researched the potential risks to a critical resource. Look for an answer choice that establishes a rule about avoiding actions with unknown consequences for important resources. It essentially argues that the cure shouldn't be administered if the side effects might be worse than the disease.