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Types of Biogeochemical Cycles

Carbon Cycle
Carbon Cycle

Ecological systems have many biogeochemical cycles operating as a part of the system, for example the water cycle, the carbon cycle, the nitrogen cycle, etc. All chemical elements occurring in organisms are part of biogeochemical cycles.

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Nitrogen Cycle
Nitrogen Cycle

Nitrogen-fixing bacteria in the soil and within the root nodules of some plants convert nitrogen gas in the atmosphere to ammonia. Nitrifying bacteria convert ammonia to nitrites or nitrates. Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.

Nutrient Cycle
Nutrient Cycle

A nutrient cycle is the movement and exchange of organic and inorganic matter back into the production of matter. Energy flow is an unidirectional and noncyclic pathway, whereas the movement of mineral nutrients is cyclic. Mineral cycles include carbon cycle, sulfur cycle, nitrogen cycle, water cycle, phosphorus cycle, oxygen cycle, among others that continually recycle along with other mineral nutrients into productive ecological nutrition.

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Oxygen Cycle
Oxygen Cycle

The oxygen cycle is the biogeochemical cycle of oxygen within its four main reservoirs: the atmosphere (air), the total content of biological matter within the biosphere (the global sum of all ecosystems), the hydrosphere (the combined mass of water found on, under, and over the surface of planet Earth), and the lithosphere/Earth's crust.

Phosphorus Cycle
Phosphorus Cycle

The phosphorus cycle differs from the other major biogeochemical cycles in that it does not include a gas phase; although small amounts of phosphoric acid (H3PO4) may make their way into the atmosphere, contributing—in some cases—to acid rain.

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Rock Cycle
Rock Cycle

Elements that include a gas phase and are stored in the atmosphere tend to cycle ____. rapidly Those elements without an atmospheric phase end up as deep-ocean _____ and recycle ___.

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Sulfur Cycle
Sulfur Cycle

Sulfur Cycle Sulfur (S), the tenth most abundant element in the universe, is a brittle, yellow, tasteless, and odorless non-metallic element. It comprises many vitamins, proteins, and hormones that play critical roles in both climate and in the health of various ecosystems.

Water Cycle
Water Cycle

Water found at the Earth's surface can cycle rapidly, but much of Earth's water lies in ice, oceans, and underground reservoirs; this water cycles slowly. The water cycle is complex and involves state changes in water as well as the physical movement of water through and between ecosystems.