20. other than oil production, most of saudi arabia’s land is used for tourism commercial farming subsistence farming nomadic herding

i think the answer is tourism althought they do grow wheat and rice and other crops better than most other places around the world, but i think the answer is tourism becuase they are hundreds of places in Saudi Arabia for tourism.

the answer to your question would be tourism because they have so many sites to see

c it has to be i googled it