From 1975 to 1980, how much is the total amount CO2 emmission in kiloton of the the world? Indicate which year the world recorded its highest CO2 emmissions.
from 1975 to 1980 refers to Year between 1975 and 1980; the total amount CO2 emmission in kiloton of the the world refers to sum(value where IndicatorName like 'CO2%'); the world recorded its highest CO2 emmissions refers to max(value where IndicatorName like 'CO2%')
SELECT SUM(T1.Value), T1.Year FROM Indicators AS T1 INNER JOIN Country AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IndicatorName = 'CO2 emissions (kt)' AND T1.Year >= 1975 AND T1.Year < 1981 AND T1.CountryCode = 'WLD' AND T2.SpecialNotes = 'World aggregate.'