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Unsolved problems in biology

Unsolved problems in biology include:

  1. Are the conditions necessary for the origin of life narrow or broad?
  2. Why is it necessary for mammals to sleep?



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Quadratic formula

... for generalizations) with a being non-zero. These solutions are also called the roots of the equation. The formula reads <math> x=\frac{-b \pm \sqrt ...

 
 
 
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