full transcript
From the Ted Talk "Prosanta Chakrabarty: Clues to prehistoric times, found in blind cavefish"

Unscramble the Blue Letters

Now, I love this species despite the fact that it tried to kill us, and that's because this species in Madagascar, its closest relatives are 6,000 kilometers away, cavefishes in Australia. Now, there's no way a three-inch-long freshwater vcahefsi can swim across the Indian Ocean, so what we found when we compared the DNA of these species is that they've been separated for more than 100 llnmiio years, or about the time that the southern continents were last together. So in fact, these species didn't move at all. It's the continents that moved them. And so they give us, through their DNA, this reispec model and mreusea of how to date and time these aienctn geological events.

Open Cloze

Now, I love this species despite the fact that it tried to kill us, and that's because this species in Madagascar, its closest relatives are 6,000 kilometers away, cavefishes in Australia. Now, there's no way a three-inch-long freshwater ________ can swim across the Indian Ocean, so what we found when we compared the DNA of these species is that they've been separated for more than 100 _______ years, or about the time that the southern continents were last together. So in fact, these species didn't move at all. It's the continents that moved them. And so they give us, through their DNA, this _______ model and _______ of how to date and ____ these _______ geological events.

Solution

  1. precise
  2. cavefish
  3. ancient
  4. million
  5. measure
  6. time

Original Text

Now, I love this species despite the fact that it tried to kill us, and that's because this species in Madagascar, its closest relatives are 6,000 kilometers away, cavefishes in Australia. Now, there's no way a three-inch-long freshwater cavefish can swim across the Indian Ocean, so what we found when we compared the DNA of these species is that they've been separated for more than 100 million years, or about the time that the southern continents were last together. So in fact, these species didn't move at all. It's the continents that moved them. And so they give us, through their DNA, this precise model and measure of how to date and time these ancient geological events.

Important Words

  1. ancient
  2. australia
  3. cavefish
  4. cavefishes
  5. closest
  6. compared
  7. continents
  8. date
  9. dna
  10. events
  11. fact
  12. freshwater
  13. geological
  14. give
  15. indian
  16. kill
  17. kilometers
  18. love
  19. madagascar
  20. measure
  21. million
  22. model
  23. move
  24. moved
  25. ocean
  26. precise
  27. relatives
  28. separated
  29. southern
  30. species
  31. swim
  32. time
  33. years