Non -renewal resources
a.can never be replaced once they get used up.
b.can be replaced but the time of replacement varies from few hundred to millions of years.
c.can be replaced in 10-20years.
d.none of these.
a.can never be replaced once they get used up.
b.can be replaced but the time of replacement varies from few hundred to millions of years.
c.can be replaced in 10-20years.
d.none of these.
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