What is a share of ownership in a company?

A share is a single unit of ownership in a company or financial asset. It is essentially an exchangeable piece of value of a company which can fluctuate up or down, depending on several different market factors. Companies divide capital into shares as a means of raising capital. Shares are also known as stocks.

Explanation:

b. take periodic breaks and alternate between tasks.  

will increase work efficiency, and avoid health issues.

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