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What is the “nutrient level model of the ecological system”?
The local ecological system includes producers, primary consumers, secondary consumers, or higher-level consumer, and decomposers. Energy and nutrients pass through levels with a food relationship wherein every level is a nutrient level. To construct the nutrient level model of an ecological system is to consolidate all information of species from research. The concept of nutrient level and food chain relationship between species connects the flow of energy and elements, in order to construct the structure of the food network and the model of motion simulation to understand the variety of ecological system and the ecological function and their relationship with each other.