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20 March, 10:03

1. The average annual increase of CO2 between 1958 and 2014 was. 2. The average annual increase of CO2 between 1970 and 1980 was. 3. The average annual increase of CO2 between 2004 and 2014 was. 4. CO2 concentration and rate over time. 5. The most recent CO2 concentration measured is.

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  1. 20 March, 13:32
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    The answers to the question are

    1). 0.85 ppm

    2). 1.28 ppm

    3). 2 ppm

    4). 1980 CO₂ concentration = 340 ppm

    2018 CO₂ concentration = 407.4 ppm

    Growth rate = 1.77 ppm per year

    5). 407.4 ppm

    Explanation:

    1 1958 - 2004 = 0.6 ppm = 46 years

    2004 - 2014 = 2 ppm = 10 years

    Total average = (27.6 + 20) / 56 = 0.85 ppm

    2. 0.6 ppm

    3. 2 ppm

    4. CO₂ concentration = 340 ppm in 1980 to about 407.4 ppm in 2018

    an increase of about (407.4-340) / (2018-1980) = 1.77 ppm per yer

    5. The most recent CO₂ concentration measured is 407 arts per million
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