View Article  Niches
Areas with a vast amount of varied niches will invariably contain:

(1) great diversity among the organisms

(2) little diversity among the organisms

(3) no organisms that risk extinction

(4) large numbers of organisms that risk extinction
View Article  Oxidation Reduction
Balance the following oxidation-reduction equation:

NaHSO4 + Al + NaOH ---> Na2S + Al2O3 + H2O