20 Points Describe the educational background or training necessary for your chosen career (Doctor).

Combining the emissions released by fossil fuel burning and  the carbon released via land use change, we get a total of 8.7 gt. since the problem states that the oceans "take up" or sequester  2.4 gt carbon  per year, we subtract that value from 8.7 gt, leaving us with 6.3 gt of carbon. since the problem states that 3.4 gt carbon dioxide emissions end up in the atmosphere, the "missing sink" of carbon takes up 2.9 gt, a value we got by subtracting the 3.4 gt amount recorded from the 6.3 gt carbon left available after the oceans sequester the carbon dioxide. 

This question is personal, so you can pick any answer. basically, it depends on what type of job you are applying for. if it's a basic job, like sales, you'll want to use a combination. if you've been working as an accountant for a while, then you would use chronological, with everywhere you worked, so the place where you're applying could call the people you worked for and they could give you  a recommendation. hope this !