As a general rule,in temperate regions the most important environmental cue that triggers migration is
A)photoperiod.
B)temperature change.
C)change in food quality and abundance.
D)all of the above

Question

Quizplus · Accepted Answer

Photoperiod, or the length of daylight hours, is the primary environmental cue that triggers migration in many species in temperate regions. As days grow shorter or longer, it signals to animals that it is time to either begin their migration or return to their breeding grounds. While temperature change and changes in food quality and abundance may also play a role in migration, they are typically secondary cues compared to photoperiod.

As a General Rule,in Temperate Regions the Most Important Environmental