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a. Why does the Intertropical Convergence Zone (ITCZ) migrate northwards during the northern
hemisphere summer and southwards during the winter?
b. Why would you expect to run out of breath more easily when you are hiking at a higher
elevation?
c. Why are there so many types of map projections?
d. What kind of map projection would be best for studying changes in the amount of permafrost
in the arctic? Why?

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