After doing a lot of research on the answers to questions 40-42 on the Regents exam and studying the map you posted, the answer can be easily figured out.
It will take approximately 3 hours for the apparent position of the sun to change from point A on the map to point B on the map.
The correct answer choice will be number 3, 3 hours.
Two ecozones would be different it they had two different climates
Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of
over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is
.
Your answer would be B, Africa.
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