Name ______________________________________________ Explorations Through Time Life Has a History Instructions: Use this website: http://www.ucmp.berkeley.edu/education/explorations/tours/intro/index.html Choose "Life Has a History" ' Level 2 Questions: 1. How many different species of living things exist today? ___________________ 2. Rank the 5 groups of animals from most abundant to least. 3. Rank the 3 groups of plants and other organisms from most abundant to least. 4. What is biodiversity? (click on the purple links for definitions) Life in the Sea Throughout Time Describe the dominant species found in each time period. 470 Million Years Ago – 160 Million Years Ago – Present Day - 8. How old is the earth? _____________________________ Educational Worksheets by James Dauray | http://www.docstoc.com/profile/jamesdauray 1 9. Fill in the blanks of the timeline of life on earth: 10. The best source of evidence for determining events in earth's history is ______________ 11. What is a paleontologist? ____________________________________________ 12. Identify three fossils from the image. Educational Worksheets by James Dauray | http://www.docstoc.com/profile/jamesdauray 2 13. What is the common ancestor of the dinosaurs, crane, and eagle shown? 14. What common physical features make us believe they are all related? 15. What physical differences make modern birds different than theropods? 16. Cladograms are drawn to show patterns of divergence. What is divergence? 17. What does each intersection on the cladogram represent? 18. What three other data (besides physical features) do scientists use to find relationships? 19. What group of animals did Charles Darwin study on the Galapagos Islands? 20. What determines the beak size and shape for each bird? 21. What would happen to the Geospiza fortis finches if the environment changed and only plants with larger, harder seeds survived? 22. What is geographic isolation? 23. The quagga is a relative to the zebra. Why did it go extinct? Educational Worksheets by James Dauray | http://www.docstoc.com/profile/jamesdauray 3
"Life Has a History - Online Activity"