If prenatal exposure to a substance leads to birth defects, the substance is called

replace   c   with   a   and simplify.

a = c , b = a, q = n , 2 , a = c , 900 b= a , 700 , q = n , 600 , 2 = b o t h , b = a , q = n

yess

explanation:

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the correct answer is 1) hayek.

2) keynes.   if this is for plato