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This Concept Map, created with IHMC CmapTools, has information related to: Frog Metamorphosis, Day 90: Shortened tail, uses lungs 3 years old: Frog is sexually mature, Day 12: Operculum develops Day 70: Hind limbs visible, tail grows shorter, Day 9: Tadpole develops internal gills Day 12: Operculum develops, Male frog clasps onto female and fertilizes eggs as she lays them show picture of fertilized eggs, Male frog sees female frog Male frog clasps onto female and fertilizes eggs as she lays them, Day 70: Hind limbs visible, tail grows shorter Day 84: Forelimbs visible, tail continuing to shorten, internal gills replaced by lungs., Female frog goes to water Male frog sees female frog, Female frog sees water Female frog goes to water, Day 84: Forelimbs visible, tail continuing to shorten, internal gills replaced by lungs. Day 90: Shortened tail, uses lungs, Day 6: Embryo hatches as a tadpole. Tadpole has external gills so it can live completely underwater. Uses sucker to attach to plant material. Day 9: Tadpole develops internal gills, Day 4: Embryo develops tail bud and sucker Day 6: Embryo hatches as a tadpole. Tadpole has external gills so it can live completely underwater. Uses sucker to attach to plant material., Female Frog (Cue song Chattohoochie by Alan Jackson or Changes by Butterfly Boucher & David Bowie) Female frog sees water, show picture of fertilized eggs Day 4: Embryo develops tail bud and sucker