is it bird, clams reptiles, crayfish, or all of them?
also,
the mouth of a vertebrate fish performes the same function as ….
1. the tracheoles of insects or
2. the spiracles of insects or
3. the bronchial tree of a mammal or
4. the trachea of insects or
5. the alveoli of a mammalian lung?
this is not homework questions its for my review!! please help! thanks!!