17- the germ theory im not sure a6out this one
18- increased soil erosion
19. Bubonic Plague
20. Regenerate
21. Type of wheat
W. Adenine / Thymine. B. Guanine / Thymine / Cytosine.
Answer:reaction, or reactants becoming products: A + B →. C + D reactants products ... CaCl2 has two Cl's because Ca is +2 charged so we need two –1 ... Due to the Law of Conservation, the number of atoms (and the mass) of each ... This is a balanced equation – same number of H and O atoms on both sides of the arrow.
Explanation:
The information given is reliable because it is based on a number of studies which were done by scientists at a variety of veterinary schools. The studies are also recent according to the article. The differences between the American and English breed are clearly stated and precise making Devon's work of identification easy.