Usually under ground springs, or sometimes hollowed earth beneath solid earth where the water pools.
Answer:
These homologous structure indicates a common ancestry
Explanation:
When 4 organisms show homologous structures, they indicates they belongs to a common ancestor from where the changes takes place in them.
The organs which are structurally dissimilar but functionally same are called as homologous organism.
A. producers
producers=plants=autotrophs
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Eastern range of appalachian mountains
