Amphibia is the class of vertebrates which is considered to be the first to develop lungs. This allowed amphibians to live successfully on land as terrestrial organisms. Ichthyostega was the first primitive amphibians with nostrils and lungs. Amphibians adopted themselves to live on land with developed lungs.
Answer:
the answer is the H
Explanation:
how do I find them because I read the question it and look at the problem in those blow down and got the answers H or I think it's j
Answer:
They absorb the food molecules that result from the external digestion.
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