Nature protection involves the preservation, sustainable use and renewal of resources, formations and elements of nature: wild plants, animals and fungi; protected species of plants, animals and fungi; migratory animals; nature habitats; habitats threatened with extinction, rare and protected species of plants, animals and fungi; formations of animate and inanimate nature as well as remains of fossil plants and animals; landscape; rural and urban green lands; trees and shrubs outside the forest. Nature can be protected in situ, i.e. in its natural place of occurrence or ex situ, i.e. outside its natural place of occurrence (e.g. in zoos, botanical gardens, oceanariums). The first of these methods is implemented by establishing forms of nature protection, which are: national parks, nature reserves, landscape parks, protected landscape areas, Natura 2000 sites, nature monuments, documentation sites, ecological areas, nature and landscape complexes, species protection of plants, animals and fungi. Biodiversity is the diversity of living organisms occurring in ecosystems, within and between species, and the diversity of ecosystems. Preserving biodiversity is one of the goals of nature protection.