According to the figure below,how much has atmospheric carbon dioxide (CO₂)increased in parts per million (ppm)in approximately the last 50 years?
A)from about 310 to 320 ppm
B)from about 360 to 400 ppm
C)from about 320 to 400 ppm
D)from about 380 to 400 ppm

Question

According to the figure below,how much has atmospheric carbon dioxide (CO₂)increased in parts per million (ppm)in approximately the last 50 years? 
A)from about 310 to 320 ppm 
B)from about 360 to 400 ppm 
C)from about 320 to 400 ppm 
D)from about 380 to 400 ppm

Quizplus · Accepted Answer

The Answer of According to the figure below,how much has atmospheric carbon dioxide (CO₂)increased in parts per million (ppm)in approximately the last 50 years? 
A)from about 310 to 320 ppm 
B)from about 360 to 400 ppm 
C)from about 320 to 400 ppm 
D)from about 380 to 400 ppm

According to the Figure Below,how Much Has Atmospheric Carbon Dioxide