Changes

===Learning objectives===

===Learning objectives===

#To understand how a natural resource is identified for commercial uses

#To understand how a natural resource is identified for commercial uses

#To understand the methods of obtaining gold from the mines

#To understand how gold is obtained from the mines

#To understand how an ecosystem is modified by the process of gold mining

#To understand how an ecosystem gets modified by the process of gold mining

#To understand the idea of depletion of a natural resource caused by extensive extraction of the resource

#To understand the idea of depletion of a natural resource caused by extensive extraction of the resource

#To understand gold as an exhaustible and non renewable resource

#To understand gold as an exhaustible and non renewable resource