Which increased risk arises when rapid tectonic uplift narrows the neck of an oxbow lake?

💡 Explanation

When rapid tectonic uplift narrows the neck, the channel gradient abruptly increases, which initiates a hydraulic head differential that induces stream avulsion. Therefore catastrophic avulsion results, instead of eutrophication, shallower regions, or pH disruptions which depend on substantially different environmental or chemical processes.

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