Q: 25 (SCRA/2014)
question_subject:
Science
question_exam:
SCRA
stats:
0,34,33,23,5,34,5
keywords:
{'green house effect': [4, 0, 0, 3], 'chlorofluorocarbons': [0, 0, 0, 2], 'carbon dioxide': [2, 0, 5, 6], 'nitrogen': [1, 1, 0, 2], 'water': [65, 15, 80, 129]}