Question

briefly discuss the different trophic levels and name the different biogeochemical cycles existing in an ecosystem
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Answer 1

Answer:

The term biogeochemical is derived from “bio” meaning biosphere, “geo” meaning the geological components and “chemical” meaning the elements that move through a cycle.

The earth obtains energy from the sun which is radiated back as heat, rest all other elements are present in a closed system. The major elements include:

• Carbon
• Hydrogen
• Nitrogen
• Oxygen
• Phosphorus
• Sulphur

These elements are recycled through the biotic and abiotic components of the ecosystem. The atmosphere, hydrosphere and lithosphere are the abiotic components of the ecosystem.

Types of Biogeochemical Cycles

Biogeochemical cycles are basically divided into two types:

• Gaseous cycles – Includes Carbon, Oxygen, Nitrogen, and the Water cycle.

• Sedimentary cycles – Includes Sulphur, Phosphorus, Rock cycle, etc

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