(Q).
Answer the question below:   Sarah is looking at layers of rock on a cliff face. She can see that the rock at the very top of the cliff are older or younger?    Assuming that:  The upper rock layers are much younger.
(A).
younger


(Q).
Answer the question below:   Mike is studying what humans eat. Bears are higher up the food chain than mosquitoes. Therefore, if humans were to eat mosquitoes, they would likely be taking in less or more levels of toxic metals?    Assuming that:  The higher up a food chain that humans eat, the greater the levels of toxic metals they take in.
(A).
less


(Q).
Answer the question below:   When a city contracts the distance across the city decreases or increases?    Assuming that:  As the Universe expands, galaxies move further and further apart.
(A).
decreases