Answer Happy

Group selection and Darwinian natural selection are equally plausible hypotheses about how evolution works O Incorrect O Correct Question 36 The following is an ultimate hypothesis about why spotted antbirds maintain high aggression throughout the non-breeding season despite low levels of testosterone: During the non-breeding season, testosterone receptor sensitivity is increased in brain areas that regulate aggression Incorrect O Correct Question 37 2 pts O Incorrect O Correct 2 pts Moths (the prey of bats) have a simple ear consisting of an external tympanum, two auditory receptor cells, and interneurons that connect the receptors to the wing muscles. This simple ear puts moths at a disadvantage relative to bats in the predator- prey "arms race" because bats can detect moths over long distances using echolocation, but moths can't detect bats until they are close, and once detected the moth's sensory system is slow to trigger an escape response.