Which of the following contributes most to promoting sustainability in an ecosystem? Lack of decomposers
O A balanced water table.
O Variety of organisms.
O A narrow temperature range.

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride