Why does areas of more rainfall have dense vegetation?

Areas with more rainfall support dense vegetation because water is a crucial resource for plant growth. Higher precipitation levels provide the moisture necessary for plants to thrive, allowing for a diverse range of species to flourish. This abundance of water promotes not only the growth of larger plants but also supports complex ecosystems, as plants can compete effectively for sunlight and nutrients in these lush environments. As a result, regions with ample rainfall often feature rich biodiversity and vibrant plant life.