Extinction and Size
URL: http://whyfiles.org/143giant_animal/index.html
Abstract: This Why Files article investigates a possible relationship between extinction and size of animals. For most recent extinctions (50,000 and 12,000 years ago), evidence indicates that mostly large animals went extinct. The Why Files examines possible reasons for this, such as climate changes and the appearance of predatory humans, and what this tells scientists about evolution and extinctions on Earth.
Grade Level: 6 - 10
Audience:Educator, Learner
Learning Resource Type: Reference, Article, Illustration
Subjects: 
Subjects
Education issues
Integrating technology
Teaching strategies
Science
Life science
Ecosystems
Population dynamics
Biodiversity
Animals
Reptiles
Dinosaurs
Format: text/html
Contributors: Amy Toburen (Author), Eric Zuelow (Author), Pamela Jackson (Author), Terry Devitt (Author), The Why Files (Publisher)
Copyright Information: Copyright 2002, University of Wisconsin, Board of Regents.
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