A preservationist is someone who actively works to protect and maintain natural environments, historical sites, and cultural heritage. They believe in the importance of conserving these resources for future generations, ensuring that the beauty and significance of places like national parks and historic buildings are not lost to development or neglect. Preservationists often collaborate with communities, governments, and organizations to promote sustainable practices and raise awareness about the value of conservation. Their efforts can include restoring endangered species habitats, advocating for land use policies, and educating the public about the importance of preserving our planet's natural and cultural treasures.