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astronomy
Earth
vegetable kingdom
animal kingdom
evolution of life
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HOME
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animal kingdom
::
amphibians
::
frog ::
life cycle of the frog
life cycle of the frog
Lebenszyklus des Frosches
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tadpole
Kaulquappe
forelimb
Vorderbein
hind limb
Hinterbein
operculum
Kiemendeckel
external gills
äußere Kiemen
eggs
Eier
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