George Mason High SchoolBIO 10104_Rainfall_and_Bird_Beaks_Gizmo_2017

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Gizmo Warm-up Darwin’s finches are one of many types of animals on the Galápagos Islands that have unique adaptations, or traits that help an organism survive in its environment. The Rainfall an... d Bird Beaks Gizmo™ allows you to explore how rainfall influences the range of beak shapes found in a single finch species. 1. The beak depth of a finch is the distance from the top of the beak to the bottom, as shown. A. What is the current average beak depth in the Gizmo? 10.04 mm B. Select the HISTOGRAM tab. Do all the finches have the same beak depth? No! 2. Click Play ( ) and let the simulation play for five years with average rainfall (12.5 cm/yr). Select the GRAPH tab and view the Finches vs time and Beak depth vs time graphs. A. How does the finch population change? The population varies in an almost sinusoidul shape, with the population going down in number and then up again. B. Does the beak depth change significantly? Yes, the beak depth decreases significantly. The beak depth went from 10mm to 7.5 on average over the 5 years [Show More]

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