Which of the following reactions is a single replacement rea…

Which of the following reactions is a single replacement reaction? A) Zn(s)+CuSO4(aq)→ZnSO4(aq)+Cu(s)Zn (s) + CuSO_4 (aq) \rightarrow ZnSO_4 (aq) + Cu (s) B) AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq)AgNO_3 (aq) + NaCl (aq) \rightarrow AgCl (s) + NaNO_3 (aq) C) H2SO4(aq)+NaOH(aq)→Na2SO4(aq)+H2O(l)H_2SO_4 (aq) + NaOH (aq) \rightarrow Na_2SO_4 (aq) + H_2O (l) D) C3H8(g)+O2(g)→CO2(g)+H2O(g)C_3H_8 (g) + O_2 (g) \rightarrow CO_2 (g) + H_2O (g)

Agricultural operations, particularly those involving large-…

Agricultural operations, particularly those involving large-scale livestock (CAFOs) and heavy fertilizer use, are major sources of phosphorus runoff. What are the mechanism(s) by which excess phosphorus leads to the development of toxic “Harmful Algal Blooms” (HABs) in surface waters?