Many animals, including humans, are diurnal. Diurnal animals are active during the day and sleep at night. Some animals are nocturnal, meaning that they sleep during the day and are active at the night.
These biological rhythms are adaptations that help animals survive in the wild.
Can you think of an example of a nocturnal animal? What might be some advantages to being nocturnal?
Standards: 3.L.5, 4.L.5