Read the passage.The emerald ash borer beetle is one of the top five most invasive species in North America, and its spread should be monitored carefully. It is native to Asia, and researchers believe that it was imported to North America on a piece of wood or wood product. The adult female beetle lays its eggs on the ash tree’s bark. The larvae bore into the tree after they hatch, hence the insect’s name, and feed on the tree’s tissues. Infestation is almost always fatal for the tree. Since the early 2000s, when the beetle first arrived in North America, tens of millions of ash trees have died. This has devastated the ecosystem, since many insects and birds rely on ash trees for their diet. It has also changed the landscape of many cities, as infected trees have had to be removed.