Biogeochemical Cycles Cameron parker

The Water Cycle

In a general explanation- during the water cycle, water from any body of water on land evaporates and becomes water vapor. The water vapor forms clouds made up of millions of droplets of water. Clouds lose this water through precipitation. Then, the cycle is repeated! The cycle is actually much more complex than these three steps and involves all kinds of landforms, bodies of water, and plants and animals.

The water cycle is a physical reaction that involves evaporation, precipitation, and infiltration. Evaporation is when water is heated by the sun and becomes gas. Condensation is when water vapor is turned into water droplets. Condensation is the formation of clouds taking place. Precipitation is when water is released from the clouds and falls to the ground. During infiltration, the water then adsorbs into the ground as groundwater. The ground water will become runoff and flow back to a larger body of water.

plants are organic components of the water cycle and water is inorganic.

humans impact the water cycle because of their intervention on land. With drainage pipes, gutters, and other appliances, the movement of runoff and groundwater is manipulated and can sometimes be negatively affected by this. Changing landscapes, such as the manipulation of natural bodies of water for the purpose of construction, also affects the water cycle.

The Carbon Cycle

Carbon is a part of plants, animals, humans, and life in general. It is critical to us for many reasons, including that it is a greenhouse gas which holds the earth's heat. Carbon travels from the atmosphere to plants, then animals eat the plants, then animals prey on other animals. Once decaying occurs, carbon returns to the soil and the cycle is repeated.

Photosynthesis is the first chemical reaction that takes place in the water cycle. This is when plants intake carbon dioxide and produce oxygen: CO2+H2O=>C6H12O6+O2. A combustion/metabolism reaction also occurs during the cycle. During this, oxygen is taken in and carbon dioxide is a product. CH4 or C6H12O6 (representing fossil fuels or organic matter) + O2 => CO2+H2O+energy

Animals and plants are the organic components of the carbon cycle. Fossil fuels and chemical energies are the inorganic components.

Humans burning fuel for various reasons has resulted in more carbon dioxide in the atmosphere. All the gases that are produced by humans contribute to global warming and are be harmful to the environment. When humans burn fossil fuels, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Removing forest environments and trees can also negatively affect the carbon cycle and our atmosphere.

The Nitrogen Cycle

The nitrogen cycle is the movement of nitrogen through the atmosphere, biosphere, and geosphere in different forms. Nitrogen is critical for life. It is found in DNA, RNA, and proteins. All organisms require nitrogen to survive.

Within the nitrogen cycle, nitrogen fixation occurs. This is the process in which N2 is converted to ammonium. Denitrification is the another reaction, it is the loss of nitrogen that is then returned to the atmosphere as nitrogen gas. Nitrification is when an amount of the ammonium produced by decomposition is converted to nitrate. Nitrogen mineralization also occurs when nitrogen is incorporated into organic matter and is converted back into inorganic nitrogen. The last reaction involved is nitrogen uptake, which is when the ammonium produced by nitrogen fixing bacteria is taken up by its host.

DNA, RNA, and proteins are organic components of the nitrogen cycle. Bacteria is also an organic component and helps decompose material using nitrates during the cycle.

Humans have impacted the nitrogen cycle through agriculture. Technological advances in agriculture have allowed the nitrogen cycle to speed up. This has lead to the increase in greenhouse gas abundance/emission in our atmosphere.

The Phosphorus Cycle

Phosphorus is an critical to animals and plants. It is the framework that holds DNA and RNA, it is a component of ATP, and it is used to build proteins. The phosphorus cycle doesn't include a gas phase. Plants take up phosphate ions and herbivores eat those plants. Then, other animals prey on the animals who contain phosphate. Next, the phosphate is absorbed into the animals' tissue. Lastly, the plant or animal begins to decay and the phosphate goes into the ground, and the cycle is repeated.

The phosphorous cycle does not include a gas phase like the other biogeochemical cycles. Although small amounts of phosphoric acid may make their way into the atmosphere, most of the phosphate comes down as a liquid in acid rain. Most phosphorus is found in sedimentary rock as a solid Phosphate: PO43- Phosphoric Acid: H3PO3

animals and plants that intake the phosphorus are organic components of the phosphorus cycle. Phosphates that end up in the soil from decayed plants and organisms are inorganic components.

Humans contribute to excessive levels of phosphorus by cutting down the tropical rain forests and through the use of fertilizers.


Created with images by ngernelle - "Nature" • juliatweedie - "Water" • yancharris - "bubbles abstract blue" • ** RCB ** - "flight" • vinodvv aka vcube - "plants"

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