soil ecosystem plant roots earthworms microscopic organisms underground network garden life fertile earth

navigate by keyword : earthworms development phosphorus environment visualizing sustainability biodiversity ecosystems layer depicting clay root system cultivation organisms diagramming humus cutaway slice decomposers growth layers crosssection compost organic farming soil fauna healthy fertile section ecological balance minerals crop rotation stems sand fertilization photosynthesis life roots rich showing water retention substrate loam absorption earth bacteria nutrient cycling charting nitrogen gardening microorganisms mulch structure decomposition plants symbiosis illustrating hydration matter fungi representing level potassium fertility displaying portraying dirt natural habitat creatures microbes underground generated

Soil ecosystem: plant roots, earthworms, microscopic organisms, underground network, garden life, fertile earth

Soil ecosystem: plant roots, earthworms microscopic organisms, underground network, garden life, fertile earth, environmental balance, ecological graphic, educational diagram, healthy gardening AI generated