The water cycle is the constant circulation of earth's water through the processes of Evaporation and Precipitation. Evaporation is the process of liquid being turned into a vapor. Precipitation is the rain, snow, sleet, or hail that falls to the ground.
There are no occurrences of chemical reactions in the water cycle.
Organic and Inorganic Components
Impact of Human Intervention
Some things that are affecting the water cycle that humans have caused are Irrigation, Urbanization, Combustion, and deforestation.
The nitrogen cycle is the process of which nitrogen is converted into other chemical forms. This includes nitrogen fixation, denitrification, nitrification, nitrogen mineralization, and nitrogen uptake.
Nitrogen Fixing N2 -> NH4+
Ammonification N2-> NH4+
Nitrification NH4+ -> NO3-
Denitrification NO3 -> N2 + N2O
A major human made intervention of this cycle is the ruining of aquatic ecosystems with the addition of nitrates to water through agricultural run off from sewage
The burning of fossil fuels is a large source of nitric oxide which returns as acid rain
The carbon cycle is the processes of which carbon is put into the environment. It is taken in through photosynthesis and returned to the atmosphere through respiration, the decay of organisms, and burning fossil fuels.
Carbon attached to oxygen (CO2) with help from sun through photosynthesis CO2 is pulled from the air to make food for plants
Humans can interfere with the carbon cycle through the burning of fossil fuels and combustion
The phosphorus cycle is the movement of phosphorus through rocks, water, soil, sediments, and organisms. Rain causes weathering of rocks which leads to the release of phosphate ions into soil.
Substitution - 1 group of phosphorus is replaced by another
Oxidation- Oxidation state of phosphorous increases after the reaction
Addition- Another molecule adds to phosphorous
Elimination- 1 molecule leads to 2 molecules
Oxidative- combines oxidation and addition
The main source of human intervention is through commercial fertilizer. This leads leads to eutrophication which is the process of water receiving excessive plant growth.
Another source of human intervention is cutting down rain forest