Paleontologists can rediscover the forgotten wisdom of our ancestors. For example, the nabatas occupied the dangerous Negev desert two thousand years ago. They diverted the rainwater of the rare heavy rain in this area into irrigation ditches and reservoirs. This method was used to rebuild the ancient farms in this area, which can now produce high grain production.
The term method in the above paragraph refers to which of the following?
The nabatas irrigate with heavy rain.