Which risk increases when a hibernating mammal's core body temperature drops below its thermoregulatory threshold?

💡 Explanation

When core temperature drops below the threshold, enzyme denaturation occurs because weak bonds maintaining enzyme structure break, impairing metabolic function, leading to cellular and organ damage. Therefore, enzyme denaturation is the key risk, rather than brown fat activation overheating, or shivering which are heat generating processes or vasodilation which supports thermoregulation.

• Which outcome in redwood trees results when high evaporative demand reduces water column pressure?
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