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fossils part 1

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  • ..............and............are examples of solid mold fossils
    ammonites , nummolites
  • ..................replaces wood material patr by part in the...........wood fossils
    silica , pertified
  • A copy of original internal details of a skeleton of old living organism
    solid mold
  • A replica of external details of skeleton of living organisms
    cast
  • The suitable medium to form a mamoth fossil is...........
    medium preserve it from decomopsition(snow)
  • .............trees secrete resinous matter , changes into ..............after its solidification
    pertified woods
  • The fossils types differ according to their way of .............
    formation
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