||The variety of living organisms in an ecosystem is called biodiversity.
||The management of the earth resources to restore and maintain balance between human requirement
and other species in the world is called
||The soil which is saturated with water is called water logged soil and this problem is called water logging.
||The soil in which salt crust is left due to evaporation
of water is called saline soil and this problem is
||Pollution has been defined by Odum (1971) as “the
undesirablechange in thephysical. chemical or
biological characteristics of air, land and water that may affect the human life.
||The increased productivity of lake caused due to enriehment of nutrients is called eutrophication.
||Industrial waste is called effluents.
||Any unwanted sound is called noise. The dumping of unwanted sound into atmosphere is called noise pollution.
||The wearing away of the soil by wind, water, snow or gravity is called soil erosion.
|Spreading of deserts to the green areas is called
deserti fication. . ,
|The operation by which land is prepared for crops plantation. harvesting is called land management.
|The ecosystemwith predominant species of tall
annual woody trees is called forest. The
maintenance and sustaining of the forest is called forest management.
||The grass land used by the animals for grazing is
called rangeland. The application of science on
rangelandtor producing maximum number of
grazing livestock regularly is called rangeland