In 2002 AD, CFC concentration of atmosphere was

Options :
  1. 261 ppt
  2. 326 ppb
  3. 1750 ppb
  4. 368ppm
Answer and Explanation :-

Answer: Option 1


Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : In Kyoto protocol, the major nations agreed to reduce emission of green house gases by

Next Question : World summit on sustainable development 2002 was held in

Click here for online test on Ecosystem


 (Getemail alerts when others member replies)

There are few sources of energy so powerful as a procrastinating college student. Paul Graham, Hackers