please help me with my biology 10 points?

[matthook38]

11. Blood flow in fishes is slow because most of the pumping action is used to push blood through the _________________. (1 point)


12. Sharks have ____________________ fertilization.
(1 point)


13. The ____________ of a bird, which looks like a blade-shaped anchor, is a large breastbone to which powerful flight muscles are attached. (1 point)


14. When a snake or lizard's tongue is drawn back into the mouth, it is inserted into a structure called __________ where the chemical molecules are analyzed. (1 point)


15. A(n) _____________ is a mammal that reproduces by laying eggs.
(1 point)


16. A(n) _________ is a cell or group of cells that secretes fluids needed by mammals for temperature regulation and other life processes. (1 point)


17. Compare the heart of a fish to the heart of an amphibian. Explain this difference in terms of amphibian ways of life. (3 points)