Q: 15 (IAS/2011)

Regarding “Carbon credits”, which one of the following statements is not correct ?
question_subject: 
Ecology
question_year: 
2011
question_exam: 
IAS
question_sub_subject: 
Ecology
question_topic: 
Ecology
stats: 
0,11680,8176,2584,3544,2048,11680