Which mechanism do salmon use to locate freshwater spawning territories when river confluence landmarks disappear due to glacial dam collapse?

💡 Explanation

Salmon rely on geomagnetic imprinting navigation, where they memorize Earth's fields as juveniles; therefore, they can navigate back, because this remains stable rather than riverine landmarks shifted by unpredictable geologic events.

• Which aerodynamic benefit do avian air sacs provide during sustained soaring flight at low altitude in high humidity?
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• Which outcome occurs when a physoclistous fish's gas bladder inflation rate exceeds resorption capacity during rapid ascent?
• Which outcome arises when elevated atmospheric ozone impedes stomata function?
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