Which mechanism prevents young European eels astray when they commence their trans-Atlantic migration in variable magnetic fields?

💡 Explanation

Magnetic fields guide eel migration; therefore, magnetic compass alignment allows them to maintain direction because their internal compass orientates along geomagnetic lines, rather than relying on stars or odour gradients, which seawater variably scatters.

• Which outcome impedes bird ascension when air sacs rupture?
• Which consequence results when magnetic particle deposition disrupts an avian ‘light-dependent compass’?
• Which consequence results when localized injury hinders imaginal disc development?
• Which constraint primarily limits dive duration of marine mammals equipped with hemoglobin-rich blood performing prolonged swims during foraging?
• Which homing behavior arises when migratory birds encounter overcast conditions?
• Which mechanism impairs avian flight during periods of prolonged heavy rainfall, increasing effective stall speed?