The abiotic part of the biosphere consists of soil, water, air, and light energy. It also involves a large number of chemical and physical processes including volcanoes, earthquakes, floods, forest fires, climates, and weather conditions. There are numerous chemical processes, but the most important include the carbon, nitrogen ,and phosphorous cycles. Because of the size of the earth and the large number of factors influencing the abiotic part of the earth, we have a vastly complex biosphere with an almost endless variety of plants and animals. While each of these abiotic factors may be studied by itself, in fact, each of these factors is influenced by and in turn influences all the other factors.
Water is the liquid part of the biosphere and is found everywhere.
Without water, life as we know it could not exist. There is a fixed amount of water that is constantly reused as part of the water cycle. Moisture in various forms is dropped on the earth from the clouds. Some of this water is taken in from the ground by the roots of plants,which give off water vapour from their leaves. The rest of the moisture evaporates from the soil's surface, runs off into the creeks, streams, or rivers, seeps into the ground, or collects in ponds, lakes or oceans.