Frog dissection questions. Please help!!!?

Question

I have some questions I can't find answers to. Can you help?

6. When you pulled the skin back from the muscles, what was the yellowish substance found between the two?
11. Explain the reason why a frog's ventral side is lighter in color than the dorsal side?
22. During one mating of frogs, the female lays some 2000 to 3000 eggs in water as the male sheds millions of sperm over them. How do these large numbers relate to the frog's fitness for life in water?

Thanks!!

Answer 1

6. Fat
11. Camouflage - light shines down from above (dorsal relative to the frog), and a lighter ventral side contributes to blending into a lit area.
22. This you'll have to figure out on your own. It should be noted, though, that human males have millions of sperm in their ejaculate, too.