How can the hemlock woolly upset natural ecosystem?

The HWA attacks eastern hemlock trees in forests and ornamental hemlock trees found in our residential landscaping. It feeds on the hemlock trees' young twigs by sucking the sap, causing their buds to die and needles to dry out and drop from the plant prematurely i think

hope i helped!!

thats a little if u want the answer just look it up on google thats what i do haha : )

thats how its supposed to be