Question
Biology Question on Environmental Issues
In 2002 AD, According to one research the concentration of CFC reached
A
261 ppt
B
368 ppm
C
1750 ppb
D
326 ppb
Answer
261 ppt
Explanation
Solution
Answer (a) 261 ppt
In 2002 AD, According to one research the concentration of CFC reached
261 ppt
368 ppm
1750 ppb
326 ppb
261 ppt
Answer (a) 261 ppt