Question

The flow of energy is unidirected wheres the biogeochemical transfer is cyclic

Answer 1

A nutrient cycle (or ecological recycling) is the movement and exchange of organic and inorganic matter back into the production of matter. unidirectional and noncyclic pathways, 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 productiveecological nutrition. Global biogeochemical cycles

The nutrient cycle is nature's recycling system. All forms of recycling have feedback loops that uses energy in the process of putting material resources back into use. Recycling in ecology is regulated to a large extent during the process of decomposition.[2] Ecosystems employ biodiversity in the food webs that recycle natural materials, such as mineral nutrients, which includes water. Recycling in natural systems is one of the many ecosystem services that sustain and contribute to the well-being of human societies.[3][4][5]

A nutrient cycle of a typical terrestrial ecosystem.

There is much overlap between the terms for biogeochemical cycle and nutrient cycle. Most textbooks integrate the two and seem to treat them as synonymous terms.[6]However, the terms often appear independently. Nutrient cycle is more often used in direct reference to the idea of an intra-system cycle, where an ecosystem functions as a unit. From a practical point it does not make sense to assess a terrestrial ecosystem by considering the full column of air above it as well as the great depths of Earth below it. While an ecosystem often has no clear boundary, as a working model it is practical to consider the functional community where the bulk of matter and energy transfer occurs.[7]Nutrient cycling occurs in ecosystems that participate in the "larger biogeochemical cycles of the earth through a system of inputs and outputs.

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