For example, we know that many insect species are only found on one host tree species. (scientificamerican.com)
One day he took a break from his duties to check out a report from a warden stationed there at Canada's northernmost national park — in a land that has not hosted trees for thousands of years, the warden had seen some wood protruding from mud near a glacier. (gi.alaska.edu)
JAMESTOWN - The City of Jamestown Summer Playground Program hosted a Tree Day event Tuesday morning at Allen Park. (wrfalp.com)