Question

What is organic evolution? How do embryological studies provide evidence evolution ???
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Answer 1

fossil recordcomparing fossils from older and younger rock layersgeographic distribution of living speciesspecies evolve differently in different environments . different species evolve similarly in the same type of environmenthomologous structures of living organisms2 variations; similar body structures that don't necessarily have similar functions 
homologous- diff mature forms but develop from embryonic tissues
vestigial- similar structures with reduced size and lesser or no functionsembryologyearly stages of many animals are very similar- suggesting that organisms share common ancestry

Answer 2

The process by which changes in genetic composition to populations of organisms occur in response to environmental changes is called organic evolution.