The definition of is the study of quantitative relationships between the amounts of reactants and products. a)chemical equations
b) stoichiometry
c) molar mass
d)coefficient

b) stoichiometry

Explanation:

Stoichiometry is the study of quantitative relationships between the amounts of reactants and products.

The word is coined from two Greek words; stoicheon  which means atom and metron which means measurement. It deals with chemical calculations based on the elementary particles of matter. Such calculations highlights the relationships between the composition or chemical reactions of matter and the mole.

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.