After a new library opens in the community guests borrow almost all of the books within the first week. The manager of the library did not anticipate such interest so she now places a limit of two books on loans so that more people will have access to them. In this case the books in the library are serving as a .

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.