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It groups establishments into industries according to their primary economic activities
In 2009, the total number of people employed in primary jobs worldwide was approximately 2.9 billion.
susbsistance farming
mining is a primary activity
The primary economic activity of the outback is agriculture, both livestock and crops.
mining is a primary activity
The primary activity of neuropsychologists is assessment of brain functioning through structured and systematic behavioral observation.
all of them
Nope.
It groups establishments into industries according to their primary economic activities
Roughly 20% of the country is employed in primary industries.
Mining