The ____________________ are tooth-like calcium phosphatic fossils that are excellent index fossils for the Ordovician.
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Q48: _ make their own food.
Q49: Benthic organisms that move through or live
Q50: Pelagic organisms can be divided into floaters,
Q51: If you were transported back in time
Q52: The Great Biodiversification Event occurred during the
Q54: The different tiers of food production and
Q55: How can we classify phytoplankton within a
Q56: The mass extinction in the geologic record,
Q57: Bacteria break down dead organisms into organic
Q58: Jellyfish are _.
A) pelagic plankton
B) benthic plankton
C)
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