9. Salamanders are amphibians with very interesting mating rituals. The males perform species-specific dances that attract females to mate. Male salamanders deposit spermatophores (mucus packets filled with sperm) on leaves, twigs, or the ground and guide females over them so females can take them up into their cloaca. Mating dances like this result in internal fertilization in many salamander species. Why are salamanders not entirely terrestrial in spite of exhibiting internal fertilization in many species? [4 pts]
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