Which structures bring oxygen from the trachea to the lungs?

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.