How have atmospheric carbon levels changed? without any fossil fuel consumption, which parts of the cycle have improved their carbon levels in comparison to previous data? which sections of the cycle have improved from the previous levels you have recorded but still are increasing their carbon levels?

Ibelieve the answer is weathering,hope my answer has you : ) 

The breaking apart of glucose, which involves spontaneous reactions 

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.