Every ecosystem depends on the continual flow of natural cycles. These cycles will continue as long as the earth revolves around the sun . Cycles are essentially forever. Some cycles are more obvious than others. The water cycle is extremely apparent in Olympic National Park where yearly rainfall on the west side can be upwards of 180 inches.
Water is returned into the air by evaporation and transpiration .
The carbon cycle is the engine that drives all life. We are, after all, carbon-based organisms just like the huge trees at Olympic. The vast photosynthetic forests of trapped carbon tower over mountainsides. Carbon alternates from the atmosphere into plants and animals, then back into the air. Carbon returns to the atmosphere by respiration and also by fire.