Ancestral amphibians were tetrapods that evolved during :

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(c) Devonian period 2. Fill in the Blanks: Earth is a member of ……………. ……………. wrote ‘Origin of life’. Oxygen is found on the earth because photo-synthetic organisms are present on the earth, this phenomenon is called ……………. ………….. is the connecting link between Reptiles and Aves. …………………. is the ancesters of horse. The evolution of ……………. molecule set the stage for the evolution of autotrophs. Evolution of birds and mammals were ……………. era. Golden era of Dinosaurs is ……………. period. ……………. fossil man has been known from Shivalik hills in India. Book of Charles Darwin “Origin of life” has been explained of ……………. ……………. be change of hareditary characters. Solar system Oparin Oxygen revolution Archaeopteryx Eohippus Chlorophyll Jurassic Mesozoic Ramapithecus Natural selection Mutation

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