Anatomical evidence of evolution focuses on similarities and differences in the body structures of different species. ... Similarities in anatomical structures of different species signify that the two species have a relatively recent common ancestor.
81. There is 1 carbon, 2 chlorine and fluorine atoms in Freon 12. To draw them it forms a cross with C in the middle and Cl and F both on the opposite side.
Answer:
If a metal and metal solution react, the more reactive metal will displace the less reactive metal from solution. If the metal in solution you start with is formed from a more reactive metal than the metal to be added, no reaction will occur.
(20/23) times 100 is 87%
now the answer asks for percentage ERROR
100-87 =13
so answer is C
