Explanation: Grand Canyon could be protect using the following reasonable approaches.
1. A quota system should be set up where entrance passes are allocated using a lottery.
2. Use skills tests where only those who satisfy certain conditions are allowed to hike certain trails and or climb certain cliffs.
3. Require that all travel in the park be by foot or bicycle except for those who are physically challenged.
4. The government should make law to prevent uranium mining around Grand Canyon.
