Select all the correct answers. This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart?

1-What percentage of total greenhouse gas emissions is caused by natural sources?
2-Should industries emitting carbon dioxide in huge amounts be fined or punished?
3-Why are carbon dioxide emissions so much higher than other greenhouse gases?
4-Why did the quantity of carbon dioxide emissions stay constant throughout the period?
5-What is the chemical formula for methane?

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.