Bony Fish Evolved ________________________ to Help Keep Them Afloat

Q29: Many scientists consider birds to be little

Q30: The first reptiles were the sail-toting:<br>A)pelycosaurs<br>B)thecodonts<br>C)therapsids<br>D)dinosaurs

Q31: Why is it that many of the

Q32: Which is incorrect about sharks?<br>A)They belong to

Q33: Which of these is not a characteristic

Q35: Bony fishes possess a swim bladder to:<br>A)regulate

Q36: The sixth mass extinction event is due

Q37: The first vertebrates to invade land were:<br>A)amphibians<br>B)birds<br>C)reptiles<br>D)arthropods

Q38: The largest living reptiles ever on earth

Q39: The milk-producing glands of mammals are called