1 tommorow 2015-10-05 2 exo 2015-10-02 3 dairy 2015-09-30 4 shortest woman 2015-09-24 5 Suffer from Anemia 2015-09-23 6 festival 2015-09-22 7 Red Double Decker Buses 2015-09-21 8 Elephant 2015-07-24 9 Smurf Town in Spain 2015-07-20 10 Rudolph in New York? 2015-07-17 1 2 3 4 5 6 7 8 9 10 [다음10개]   회 원 박효정 작성일 2015-01-30 Weather    Feeling  Pleasure 제 목 frog 내 용 The researchers played different tungara frog songs to female frogs and frog-eating bats on a stereo in order to see which speaker they approached first.Akre and her team observed that the female frogs and the bats did not always go toward the speaker producing the most “chucks.” Instead, their preference seemed to depend upon the ratio between “chucks.” For example, female tungara frogs always preferred two “chucks” to one. But they didn’t always prefer three “chucks” to two.The female frogs usually did not wait until the male finished singing. The bats also did not wait, and quickly snapped up the male frogs that were singing for a longer time. Therefore, female frogs are forced to choose their male companion, based on their vocal skills, very quickly. That must be a lot of pressure and stress for the male frogs! 답변자 ts0068 답변일 2015-02-02 답변내용 The researchers played different tungara frog songs to female frogs and frog-eating bats on a stereo in order to see which speaker they approached first. *CORRECT! Akre and her team observed that the female frogs and the bats did not always go toward the speaker producing the most “chucks.” *CORRECT! Instead, their preference seemed to depend upon the ratio between “chucks.” *CORRECT! For example, female tungara frogs always preferred two “chucks” to one. *CORRECT! But they didn’t always prefer three “chucks” to two. *CORRECT! The female frogs usually did not wait until the male finished singing. *CORRECT! The bats also did not wait, and quickly snapped up the male frogs that were singing for a longer time. *CORRECT! Therefore, female frogs are forced to choose their male companion, based on their vocal skills, very quickly. *CORRECT! That must be a lot of pressure and stress for the male frogs! *CORRECT!