(I) Scientists have developed a new method to model how birds might sense the Earth's magnetic field during lo…

Question

(I) Scientists have developed a new method to model how birds might sense the Earth's magnetic field during long migrations. (II) Many migratory bird species also change their diet significantly depending on the season and region. (III) Unlike the visible cues birds use, such as the position of the sun, this magnetic sense is thought to rely on specialised proteins in the retina. (IV) These proteins respond to the angle of magnetic field lines as light strikes them, creating a kind of internal compass. (V) This internal compass helps birds maintain a consistent heading even across featureless terrain like open ocean, though the sense itself remains invisible to the naked eye.

Accepted Answer

II — Paragraf, kuşların Dünya'nın manyetik alanını nasıl algıladığını açıklar: retinadaki özel proteinler, manyetik alan çizgilerine verilen tepki ve ortaya çıkan içsel pusula. Göçmen kuşların mevsime ve bölgeye göre beslenmelerini değiştirdiğini söyleyen cümle ise bu açıklama zincirinin dışında kalır.