Answer: saudi arabia,russian federation, united states,iran,china
Explanation:
https://www.statista.com/statistics/273504/oil-production-in-selected-countries-since-2000/
I think that the beginning of the question says "ill health"
Yes, this is true. low earnings are often correlated with bad health - it's because poor people have less access to health care, less access to healthy food and might be forced to do jobs which are stressful and demanding.
