Orbiting Earth in the spaceship, I saw how beautiful our planet is. People, let us preserve and increase this beauty, not destroy it - Yuri Gagarin (the first man in space).
If you say that a job or activity is the preserve of a particular person or group of people, you mean that they are the only ones who take part in it. The conduct of foreign policy is largely the preserve of the president
keep in safety and protect from harm, decay, loss, or destruction; "We preserve these archeological findings"; "The old lady could not keep up the building"; "children must be taught to conserve our national heritage"; "The museum curator conserved the ancient manuscripts"
If you preserve something, you take action to save it or protect it from damage or decay. We need to preserve the forest perfectly preserved medieval houses. + preservation pres·er·va·tion the preservation of buildings of architectural or historic interest