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Wrogue Wrogue
wrote...
Posts: 4833
10 years ago
The present atmospheric concentration of carbon dioxide is approximately 396 ________.
A) parts per hundred
B) parts per thousand
C) parts per million
D) parts per billion
E) parts per trillion
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wrote...
10 years ago
CC
Wrogue Author
wrote...
10 years ago
Your assistance has been above and beyond my expectations! So glad to have joined this forum. Thanks, and will mark as this thread officially solved Smiling Face with Open Mouth
wrote...
10 years ago
Always nice to know I've helped.
Good luck with the rest of them.

- GeoExp
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