science help (1 Viewer)

jonowang

Member
Joined
Feb 3, 2009
Messages
96
Gender
Male
HSC
2011
what are the importance of cycles of materials in ecosystems (water cycle, carbon cycle and nitrogen cycle). what are these cycles anyway?

and how do humans impact on ecosystems?
 

Amogh

Member
Joined
May 16, 2009
Messages
751
Gender
Undisclosed
HSC
N/A
It is through these natural cycles that resources are renewed.

For eg. Water cycle (simplified) --> evapotranspiration, condenstion, precipiation, evaporation....

these cycles are MEANT to be endless and could be considered as the life cycles of the resource.

Human intervention disrupts these cycles, negatively impacts all components of the biosphere. For example, poor irrigation practices raise soil salinity and evaporation rates.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top