According to the rule of the ecological pyramid, for the growth of 1 g of the mass of consumers of a certain order, 10 g of consumers of the previous order are required. Biomass of consumers of the 3rd order – 400 kg. Determine the biomass of the 1st order consumers (in kg).
producers → 1st order consumers → 2nd order consumers → 3rd order consumers
since biomass of consumers of the 3rd order = 400kg, then the biomass of consumers of 2 is of the order of 400 * 10 = 4000 kg, and the biomass of consumers of 1 is of the order of 40 * 10 = 4,000kg = 40t.
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