Think of it this way:
DNA inside cells store all the genetic information on a person's looks, eye colour, hair colour etc. It makes them unique. The analogy of being like books in a library basically suggests that in a library there is so much information and every book is different with different knowledge... That's basically what DNA is; millions of different information things.
Answer:
Gallbladder
Explanation:
The Gallbladder holds bile produced in the liver
Bats are able to do that . Hope this helps!!!!
