4 years ago

WILL MARK BRAINLIEST

2 answers:

6 0

I believe it is lungs. Gills are for underwater animals. A heart/bones has nothing to do with gas exchange. Hope this helped

DENIUS [597]4 years ago

6 0

Answer:

Probably lungs- gills are for water creatures, hollow bones dont have connection with the respiratory system, and chambered hearts also dont deal with the respiratory system

Explanation:

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