StudyQSelectAnsF11 - EEB100 Ecology: Answers to Selected...

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EEB100 Ecology: Answers to Selected Study Questions 3. A fantastically wealthy and not-very-environmentally-conscious person decides to build their own island near the equator. They also decide that they would enjoy having a desert environment. They hire you as a consultant on designing the island, which can be any size and have any geomorphology they like. a. How would you explain to the crazy rich person that desert islands (not to be confused with deserted islands) are unlikely at low latitudes? Sunlight strikes at a more direct angle at the equator. Large air masses heat up and rise (as with a hot air balloon). As the air reaches the upper atmosphere it cools, causing water vapor to condense and fall as rain. This creates very warm, wet conditions in equatorial areas, and you tend to find rainforests rather than deserts. b. What are two methods you could use to terraform the island and create a desert, or at least much dryer conditions, on part of it? Determine the prevailing wind direction. Construct a mountain range perpendicular to it so that a rain shadow is created. A desert will form in the rain shadow. Make the island so massive that a desert forms by continental isolation. 6. *Imagine you are on a planet that is exactly like eh earth, but rotates in the opposite direction. On which coastlines, west or east would you expect top find more upwelling? You would expect upwelling to occur on the eastern coastlines. Because the earth is rotating in the opposite direction, the coriolis effect is reversed- it will be to the left in the Northern hemisphere and to the right in the southern. Upwelling is driven by the Coriolis effect. On the new planet, winds form the pole traveling down eastern coastlines would have the surface water deflect offshore. 21. There is a series of small forest patches where the local rabbit populations receive
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StudyQSelectAnsF11 - EEB100 Ecology: Answers to Selected...

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