<span>Countercurrent oxygen exchange I think
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Number b I think is right
The uterus protects and nourishes the fetus
<span>The causes for recent amphibian declines are many, beacuse of an emerging disease called chytridiomycosis . Chytridiomycosis is a disease caused by the fungal chytrid pathogen Batrachochytrium dendrobatidis.
I hope this helps! :D</span>
