There are lots of different jobs. All jobs are equally important.
There are three job sectors. People with jobs in the primary sector obtain raw materials. A farmer, a fisherman and a miner obtain natural products. They work in the primary sector.
People with jobs in the secondary sector transform raw materials into products. People with jobs in the tertiary sector provide services.
An industrial worker transforms raw materials into products. He/She works in the secondary sector. A doctor provides a service. He works in the tertiary sector.
Different tools are used in different jobs: hammers, saws, syringes, X-ray machines, tractors, rakes...
Lots of different jobs from all three sectors take part in an industrial process.
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