1. As energy moves through successive trophic levels in an ecosystem, it decreases. This is known as the 10% rule, where only about 10% of the energy from one trophic level is passed on to the next trophic level. For example, if plants (producers) have 100 units of energy, only about 10 units of energy will be transferred to herbivores (primary consumers), and so on.
2. The term that refers to a network of interconnected food chains in an ecosystem is a "food web." A food web consists of multiple food chains that are linked together, showing the flow of energy and nutrients through different organisms in an ecosystem. It illustrates the complex relationships between various organisms and their feeding interactions within a community.
