It is important to know the parts of a sentence. Lungs is the direct object in the sentence, "They develop lungs as an adult. ".
Adults (and children) use their lungs all their lives.
with their lungs
Yes, children's lungs are smaller than adults lungs.
The adults do.
yes
The lungs are the last organs to develop in utero. They are generally developed enough to be able to perform breathing at about 32 weeks, or 7 1/2 months.
The only animal that has true lungs and gills is the lungfish. Animals like frogs often have gills for a portion of their lives and then later develop lungs.
lungs
The gills are replaced by lungs as they become adults
Not sure have no clue
No, if the mother is in premature labor, she is given the medication and it goes to the baby to help develop his or her lungs.
When an amphibian is a larva, it will have gills. As it matures into the adult stage, it will develop lungs.