whiteleopard405 whiteleopard405
  • 03-03-2014
  • Biology
contestada

Which of the following can be considered fossils?
a. a 1 billion year-old rock.
b. a 1 billion year-old piece of amber.
c. a 1 billion year-old piece of amber with a primitive insect inside.
d. all of the above

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helenchow9
helenchow9 helenchow9
  • 03-03-2014
D.......................
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