Misc: The study of sound is ________?

Questions

There are _______ distinctive types of combs on chickens?

The now-extinct ancestor of the horse, _______, had a short neck, a pug muzzle, and stood no higher than a medium-sized dog?

The electric eel is the most shocking animal on Earth - no other animal packs such a big charge. If attacking a large prey, a 9-foot-long eel can discharge about _____ volts?

Since white tigers have pigmented stripes and blue eyes, they are not?

There are some _____ different species of sea snakes, and all of them are venomous?