A tree is a perennial plant with an elongated trunk or stem that supports branches and leaves. Trees come in various shapes and sizes, ranging from towering redwoods to small ornamental varieties. Their roots anchor them to the soil, absorbing water and nutrients, while their leaves often perform photosynthesis, converting sunlight into energy. Trees play a vital role in ecosystems, providing shelter, oxygen, and food for countless organisms. They help regulate the climate by absorbing carbon dioxide and are integral to water cycles. Many trees, like oaks, pines, and maples, also hold cultural and symbolic significance across cultures.