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Evolution Crossword (Beginner) Crossword Puzzle
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Evolution Crossword (Beginner)



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2 serve identical functions and look somewhat alike. They have different embryological development
3 new species appear
4 determines the rate of radioactive decay in an isotope (calculate the half-life)
5 compare the placement with that of the fossils in the other layers of work
6 serve no useful functions, but they were once useful to their ancestors
  1
1 structure that have different mature forms, but develop from the same embryonic tissues
  1
Answer
 
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