What was Darwin's biggest question?

Is cowhide leather real? What do elephant birds eat? What can you could conclude about an organism with the name Rana temporaria? What do you feed 5 week old puppies? Why were the Galapagos island so important to Charles Darwin? What insect gives off a yellowish-green light in the dark? What is Latin name of bull shark? Why do snake likes to be around your neck? What causes most animal deaths? Who is chiu weng the artist? What does omnivorouse mean? Are more adapted for moist environments? Is as fast as a cheetah an adjective? What type of lizard starts with the letter N? What endangered level is the reeves muntjac? Is polyethylene glycol poisonous to dogs and cats? Which mammal is similar to a raccoon? Is there a quiet time law for dogs barking in Baltimore city? What is the cost to get a litter of puppies or kittens get shots? How long does a moose live with its parents?