The definition of an ecosystem is that ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
The tomato plants, the fungi, and the soil all interact to sustain each other.
the liver processes the blood and breaks down balances and creates the nutrients and also metabolizes drugs into forms that are easier to use for the rest of the body or that are nontoxic more than 500 vital functions have been identified with the liver