U.S. News has named a member of the Ivy League as the best national university in each of the past fifteen years ending with the 2015 rankings: Princeton eight times, Harvard twice and the two schools tied for first five times.
Frogs tend to be nocturnal because night is the best time for them to catch prey such as insects and worms. Nocturnal terrestrial frogs are often brown or gray with spotted backs, while nocturnal tree frogs are usually green. These camouflage colors keep them hidden from predators as they sleep during the day.
A tree frog will live in the Understory (2nd layer) or Undercanopy (which ever you prefer), and the forest floor(1st layer).They never come up to the Canopy as there is no fo â¦ od for them there also predators can easily spot them. tree frog will live in the Understory (2nd layer) or Undercanopy (which ever you prefer), and the forest floor(1st layer).