Diffusion
A) is the result of relocation only.
B) sometimes encounters barriers.
C) terminates at a hearth.
D) has decreased greatly in recent years due to advances in technology.
Answer: B
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Fill in the blank(s) with correct word.
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Describe the differences between subsistence and modern agriculture. What are the major components of the agricultural revolution? What are the environmental costs of each?
What will be an ideal response?
Which of the following is NOT a way to change the porosity of a rock?
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