A: Skin. heart is a organ but it's sorta small. Same with liver. Skeleton is not a organ
I don't think so. All a dichotomous key is is a key to different types of species/animals.
In this scenario, Sarah is primarily ENCODING INFORMATION INTO HER MEMORY.
Encoding of information involves the process of putting a series of characters in a specialized format for storage or transmission. Sarah is storing the information she is acquiring from the book into her memory. <span />