How are the products and resources we consume actually produced?

fquestion from environmental science a study of interrelationships

Today, the production of goods, resources and services takes place through production chains, where 3 clearly differentiated productive sectors are identified:

1- the primary sector is in charge of the production of raw materials, through their generation and extraction from the natural environment to be used for the production of products or direct consumption by society. Example of primary activities can be agriculture or mining.

2- the secondary sector is the one that transports and processes the raw materials, finalizing the transformation of the raw material into a new product that satisfies a particular social need. Industrial activity is a secondary activity, which modifies these raw materials by launching processed products onto the market.

3- Lastly, the tertiary sector is in charge of marketing the processed and / or natural products directly for human consumption, that is, they bring goods and services closer to consumers. A clear example of tertiary activity is that of supermarkets or advertisers.

question

which are human systems?

the amazon rain forest

the appalachian trail

the george washington bridge

the himalayas

the hoover dam

the north american free trade agreement