Questions Evolution Does Not Answer 
to how it came to be. Henry Fair- 
field Osborn says: “We have no 
idea when the first unicellular ani¬ 
mals known as Protozoa appeared.” 
(“The Origin and Evolution of 
Life,” p. 111.) 
Thus, if the animal kingdom had 
its origin in the vegetable, or both 
in some lower and intermediate 
form, no trace of this marvelous 
transition is to be found. There is 
no scientific proof of it. 
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