The Earth's four subsystems are:Atmosphere – airHydrosphere – waterGeosphere – landBiosphere – lifeThese systems are interconnected, meaning a change in one affects the others.Heavy rains (Atmosphere) cause rivers to overflow (Hydrosphere).This leads to soil erosion and landslides (Geosphere).As a result, it affects humans, animals, and plants (Biosphere).Air pollution from factories (Biosphere) releases greenhouse gases (Atmosphere),causing global warming, which melts glaciers (Hydrosphere),and affects agriculture and land stability (Geosphere),endangering life on Earth (Biosphere).To solve environmental issues, we must understand how these subsystems are connected. Solving one problem may help improve the others.