A primary source of anything is a first hand account be it a diary, eye witness account, the person must have experienced it themselves while a secondary the information could have been passed on for example a news paper or memoir on someones life.
Answer:
Here is what I found since there are no answers to choose from. Hope this helps.
Explanation:
en·er·gy
/ˈenərjē/
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noun
1.
the strength and vitality required for sustained physical or mental activity.
"changes in the levels of vitamins can affect energy and well-being"
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2.
power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
Similar:
The supreme leaders of the DPRK have been Kim Il-sung, his son Kim Jong-il, and his grandson Kim Jong-un.
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