9,Which of the following is a combustion reaction? Group of answer choices A, H2SO4(aq) + Na2CO3(aq) =>Na2SO4(aq) + H2O(l)+ CO2(g) B, Ca(s) + 2HCl(aq) => CaCl2(aq) + H2(g) C, C2H4(g) + 3O2(g) => 2H2O(l)+ 2CO2(g) D, H2SO4(aq) + 2NaOH(aq) =>Na2SO4(aq) + 2H2O(l) E, Mg(s) +Cl2(aq) =>MgCl2(s)  F, 2NaOH(aq) + MgCl2(aq)=>

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Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.