Cycling of materials in ecosystem, Science

Cycling of materials in ecosystem:

Living organisms require four nutrients in relatively large amounts, these are carbon. oxygen, nitrogen and hydrogen. They also require phosphorus and sulphur. These elements are present in our environment in a fixed quantity,  therefore they must be  recycled  in order to sustain life. Also these'elements must move efficiently,  from the living  to nonliving components and vice versa. Let us understand this with the help of  an example. Plants take in  carbon as carbon dioxide to produce food. As the herbivores eat plants, carbon is on  to them, which  in  turn is passed on to carnivores,  and so on. Carbon is eventually returned to the nonliving pool  in  the ecosystem,  through the excretory processes of  the producers, the herbivores. the carnivores,  and also through the activity of the decomposers. Through such cyclic processe~these  nutrients are used over and over again by  the organisms. 

This aspect of  the ecosystem function is called the cycling of materials. In contrast to energy flow which Is  a one way process, mineral nutrients move more or less  in a  cyclic way. In  the following sub-sections,  you would study the cycles of nitrogen, carbon and water. This would give you an  idea of  the complex involvement of  the various living and nonliving components.  

Posted Date: 9/28/2012 4:56:11 AM | Location : United States







Related Discussions:- Cycling of materials in ecosystem, Assignment Help, Ask Question on Cycling of materials in ecosystem, Get Answer, Expert's Help, Cycling of materials in ecosystem Discussions

Write discussion on Cycling of materials in ecosystem
Your posts are moderated
Related Questions
Infectious diseases: Some of you may have heard about the great bubonic plague, a fatal disease of the blood, spread by fleas and respiratory  secretions. It occurred in epid

#qpecifically, they want to find two separate locations: one where shallow, large magnitude earthquakes are frequently found, and one where large steep volcanoes that have explosiv

Explain Ketones The ketone bodies accumulate in the blood in impaired glucose metabolism as in starvation and diabetes mellitus. The high levels of ketone bodies are excreted i

Define Hypovolemia or Reduction in Blood Volume Hypovolemia leads to a decrease in cardiac output, which causes a fall in the systemic blood pressure. Hypovolemia may be produc

my topic is QTL mapping of Aedes and Drosophila and I am not getting proper information for making an assignment on it what should I do?

Mutarotation:-   The  process whereby the  configuration  of  an anomeric carbon converts from a and p and vice-versa.

what is meant by three phase signal..


Venus-the Clouded Planet Venus, our nearest planetary neighbour, only 40 million km away, has its surface hidden from view by a dense yellowish-white cloud, which extends to 80

# Fråga ..