9. A student compares a model of a fatty acid to a model of an amino acid. Which statement accurately compares two models?
a. Both models contain the same elements
b. Both models are polymers that each contain different monomers
c. The two models obtain elements, but the amino acid contains more types of
elements
d. The two models are structurally identical, but they are using different elements.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

me and my friend did 2

multiply it by 5 in order for you to understand i cant give an exact answer.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.