They are called primary products

Land is anything that has been provided by nature as an endowment of resources, which is available for use. The most obvious type of «land» is geographical land. We use it for farming, forestry, factories and housing estates. We tunnel into it to extract metallic ores, chemicals of various sorts, oil, coal, water, sulphur, salt and countless other products We domesticate wild plants and set up rubber plantations, sugar plantations, etc.

Another kind of’land’ is the waters of the sea fend the fruits of the sea. We no longer go whaling, but we still fish; we collect lobsters, we harvest seaweed for fertilisers; we trap sea water in shallow lagoons to make salt; we are beginning to mine the oceans for metallic ores; we trap tides to generate electricity and we are working to use wave power as an inexhaustible power supply.

Yet other kinds of «land» are the gases of the atmosphere. We can obtain them all by refrigeration processes which separate them off, because they turn to liquids at different temperatures. Oxygen is useful, so are carbon dioxide, nitrogen and the inert gases, helium, neon, argon, etc.

All these resources known by the general term ‘land’ are gifts of nature. They are called primary products (first products) because they have been here from the very beginning of time. If an entrepreneur is a primary producer it means he/she harvests the bounties of nature. Thus fishing, drilling for oil and natural gas, farming, forestry, dairy farming, poultry keeping, rubber planting and similar activities are all primary production.