Teacher’s Questions for Old Germs

SCIENCE

Before reading:

  1. What is the longest-lived organism you can think of, and how old can it grow to be?
  2. Describe a few ways in which living things differ from dead things.

During reading:

  1. How old is the deep clay that the bacteria live in?
  2. Do scientists know the age of the single-celled bacteria that live in the muck? What are some of the age estimates?
  3. Where do the microbes get their food?
  4. Over 1,000 years, how much new sediment will settle onto the seafloor?
  5. How deep down in th...

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