Træer

Træer are perennial plants with elongated stems or trunks, supporting branches and leaves in most species. They are a dominant feature of terrestrial ecosystems and are vital for life on Earth. Trees play a crucial role in the carbon cycle, absorbing carbon dioxide and releasing oxygen through photosynthesis. They also help regulate climate, prevent soil erosion, and provide habitats for a wide variety of wildlife.

The lifespan of trees can vary significantly, with some species living for thousands of years. Their growth is typically marked by the formation of wood, which provides structural support and allows for transport of water and nutrients. Trees reproduce through seeds, which are often contained within fruits or cones. The dispersal of these seeds is essential for the propagation and spread of tree species.

Different types of trees are adapted to various climates and environments. Deciduous trees shed their leaves annually, usually in autumn, while evergreen trees retain their foliage throughout the year. Forests, which are extensive areas dominated by trees, are among the most biodiverse terrestrial habitats. They provide resources like timber, food, and medicinal compounds for humans, and their conservation is a significant global concern. The study of trees is known as dendrology.