paragraph tells us that______.РA. the concentration of CO2 rises during summerРB. the concentration of CO2 goes down during winterРC. the figure in the spring of 2015 will not reach 400 ppmРD. Pieter Tans is the man in charge of supervision at Mauna LoaР14. 24.The rise of green house gas emissions leads to______.РA. the decrease of ppm statisticsРB. the faster increasing rate of ppmРC. the slower increasing rate of ppmРD. the highest readings in recorded historyР15. 25.Which is true according to the last paragraph?РA. CO2 remains in the atmosphere for several dozen years.РB. At current rates, Mauna Loa reading will rise above 450 ppm by 2075.РC. The chance of cutting emissions and achieving 450 ppm by 2075 is good.РD. Human's gas emissions have been cut at once in order to achieve 450 ppm.
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