Question

1. what are some theories scientists have about how monarch butterflies navigate during their migration?

Explanation:

Scientists have proposed several theories regarding monarch - butterfly navigation during migration. These include the use of the Earth's magnetic field (magnetoreception), the position of the sun (sun - compass orientation), and the detection of polarized light. They may also use olfactory cues and internal biological clocks.

Answer:

Some theories include magnetoreception (using the Earth's magnetic field), sun - compass orientation, detection of polarized light, olfactory cues, and internal biological clocks.