Bone book Whos bone?strong How much do we know about bones? Everything in the bone to look at the flap! Non-fiction science flapbook with bones appeared! strong Our bones which we have always been close to but have not looked at so far. How much do we know about bones, which are very important beings that organize and sustain the animals body? The history of bones dates back hundreds of millions of years from now. Their bones evolved together as the first vertebrate animals were born, evolved, and gradually adapted to the environment, which no creature could live on. In other words, the bones are the great survivors who have survived through hundreds of millions of years. This book is a nonfiction science fiction book that contains such incredible bones.