Trees that rely on wind for pollination, such as oak and pine, produce significantly more pollen than those pollinated by insects. Gardeners should be mindful of high-pollen plants like asters ...
Over 3,200 species of wild animals are used as food. In some countries and regions, forests and trees provide around 20% of the income for rural households. Find out more about the connection ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果