Answer:
40%
Explanation:
Since 1750-2018 it was 45% but lower emission's have reduced this just by 5% but 5% off the original 45 is 45 x 0.05 = 2.25% reduction since 2018 and the full answer is 40%
If we compare this to a same rate over 19 years to 2040
Then future yearly average is 2.25/2 = 1 . 125 x 19 = 21.375% reduction from 2021-2040 which means emissions will be at 40-21.375 = 18.625% and in 2040 the reduction years will have proved the rate compared to growth was set at 1 year reduction for every 25 years growth as 45/268 = 0.16 growth every year and the reverse is 2.25/0,1679 = 14 times reduction is the proof of reduction on growth for being period of 268 years till 2018 data, for these many years and since the industrial revolution in 18th century we are at 14 times faster at reversing than increasing on average.
But over 2 years we are only working at 1.2% at best each year to decrease, which means people are only 1.2% less destructive and should all re-review their source use like oil products, beef and animal products like leather and Fats, fatty acids, and protein meals from cows in candles soaps toothpaste and deodorant perfume, mouthwash, toothpaste, shaving cream, soap and deodorants. Stearic acid derived from cow fat is the most common so go vegan if that helps next 10 or 20 years.
other green house gases that stand out is biodiesel where palm oil emits 3 times as much as any other biodiesel and is also found in most foods ;ole pizza, doughnuts and chocolate and 50 % in all premade foods generally.
say no to beef, pizza, donuts, nestle, mars and unilever/persil or anything with palm oil in it.