<p> Name ______</p><p>Exploration Through Time “Life Has a History” http://tinyurl.com/2kxl9</p><p>-Go to LIFE HAS A HISTORY and click on LEVEL 2</p><p>-Read the intro page so you know how to navigate through the site</p><p>-When you are read click NEXT in the lower right hand side of the screen</p><p>-Go through the tutorial and answer the following questions:</p><p>1. How many different species of living things exist today? ______</p><p>2. How many animal species are known to exist today? ______</p><p>3. Which group of animals has the largest number of species? ______</p><p>4. How many mammal species exist today? ______</p><p>5. Number the organisms from 1 (most abundant) to 8 (least abundant)</p><p>___ Plants ___ Protists ___ Mammals ___ Molluscs</p><p>___ Fungi ___ Roundworms ___ Arthopods ___ Flatworms</p><p>-Click on each animal group so that a picture appears, once you have clicked them all click NEXT</p><p>-Click on each animal group so that a picture appears, once you have clicked them all click NEXT</p><p>- Click NEXT</p><p>- Click on the word GEOLOGIC TIME and click on LIST ALL TERMS 6. Define the following in your own words: a) biodiversity-</p><p> b) evolution-</p><p> c) fossil-</p><p> d) natural selection-</p><p> e) speciation- </p><p>7. Click on 470 Million Years Ago a) What was the name of the period? ______b) What was the dominant predator? ______c) What was the first arthropod? ______</p><p>8. Click on 160 Million Years Ago a) What was the name of the period? ______b) What large marine reptile existed? ______</p><p>9. Click on Present a) What is one reason why coral reefs are important? ______</p><p>- Click NEXT</p><p>10. How old is the Earth? ______</p><p>11. Fill in the blanks of the timeline 12. The best source of evidence for determining events in earth's history is ______</p><p>13. What is a paleontologist? ______</p><p>14. Identify three fossils from the image. Name them and point to them with an arrow ______</p><p>15. What are 2 features found in therapods? (click on the word therapod) ______</p><p>16. What is a cladogram?______</p><p>17. To which animal are the crane and eagle most closely related?______18. What other data (besides physical features) do scientists use to find if organisms are related? List 3 things. ______</p><p>19. What type of birds on the Galapagos Islands were adapted to different regions? ______</p><p>20. The beaks of the birds vary with what? ______</p><p>21. What would happen if the environment changed and only plants with larger, harder seeds survived? How do you think that might affect the population of Geospiza fortis finches? ______</p><p>22. What is geographic isolation? (click on the word geographic) ______</p><p>______</p><p>23. What is the name of the creature below: ______</p><p>24. Name two animals that have gone extinct since humans have been around. ______</p>