B and d because i took a text on that
Answer:
Where is the story that goes with it?
Answer:
The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon and is followed by the Mesozoic Era. The Paleozoic was a time of dramatic geological, climatic, and evolutionary change. ... Arthropods, molluscs, fish, amphibians, synapsids and diapsids all evolved during the Paleozoic.
The correct answer is B) trachea. Trachea is the segment that connects lungs.
