Answer:
The right atrium takes blood from the veins and pumps it into a ventricle
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What you meant must be the adaptive advantage of the frogs' lungs. Frogs are considered as amphibians wherein the have this unique ability to reside either on land or in water. Their specialised lungs could be responsible to these which makes them capable of breathing oxygen in water and land.
Answer:
Repetitive DNA segments: transposable elements.
I hope it helps.
My answer is A i hope this really helps u!
