Destroying terrains of Amazonia, for example (10)
I believe the answer is:
rainforest
'amazonia for example' is the definition.
'destroying terrains of' is the wordplay.
'destroying' indicates anagramming the letters.
'terrains'+'of'='terrainsof'
'terrainsof' anagrammed gives 'RAINFOREST'.
(Other definitions for rainforest that I've seen before include "tropical environment" , "Luxuriant tropical woodland" , "has lots of tropical trees" , "The Amazon, for example" , "geographical feature" .)