Rain Fall and Bird Beaks

Name: ______________________________________

Date: ________________________

Student Exploration: Rainfall and fowl Beaks
Vocabulary: adaptation, smack judgment, directional selection, drought, evolution, natural selection, depart, stabilizing selection

prior(prenominal) Knowledge Questions (Do these BEFORE using the doodad.) During the voyage of the HMS Beagle (18311836), the young Charles Darwin tranquil several species of finches from the Galápagos Islands. Two of Darwins finches be shown below. 1. Which species do you think is shell adapted to a diet of small, minute seeds? Explain why you think so. _______________________________________________________ _______________________________________________________

2. Which species do you think is best adapted to a diet of large, toughto-crack seeds? Explain. _______________________________________________________ _______________________________________________________ thingumabob Warm-up Darwins finches are one of many types of animals on the Galápagos Islands that defend unique adaptations, or traits that help an organism survive in its environment. The Rainfall and Bird Beaks Gizmo™ allows you to explore how rainfall influences the range of bank bill 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? ________________________ B. destine the HISTOGRAM tab. Do all the finches have the same beak depth? _______

2. Click Play ( ) and let the simulation rook 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 agitate? __________________________________ B. Does the beak depth change significantly? ________________________________

Activity A: Normal years

Get the Gizmo ready: Click Reset ( ).

Introduction: The Galápagos Islands are very dry, with an average rainfall on some...If you want to besot a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .