One way scientists can study human migration pathways is by using ____ pathways
a. climate data
b. DNA
c. glacial ice
d. water footprint
e. fossil
b
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The diagram on the left in box A shows the interface of solid and liquid phases of a single substance where each sphere represents a molecule of that substance. Which box, A, B, or C best represents what the molecules of this substance would look like if heat were added? Which box best represents what the molecules of this substance would look like if heat were taken away? 
A. A and B B. C and B C. A and C D. B and C
What is a shadow zone?
a. A zone that is unable to be penetrated by sound waves due to the density of seawater b. A zone that is unable to be penetrated by light waves due to deep depths c. A zone in front of ships and submarines that creates a converging blind spot for sound waves d. A zone where the divergence of sound waves creates a region that has little sound energy penetration e. A zone that is unable to be penetrated by light waves due to high scattering
Every winter morning when the sun is shining bright, a man pulls back the drapes on a large south-facing window. Here in Montana, he knows that he can help heat his home this way using
A) conductive solar heating. B) active solar heating. C) radioactive solar heating. D) passive solar heating.
What component of a beach profile is a flattish, wave-deposited sediment platform?
A. sandbar B. backshore C. dune D. nearshore E. berm