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.

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

Regarding most of the narrator’s story, which word best describes the tone?