As I am sure you know, weeds can be native or alien invasive plants that harm agricultural, disturbed, and natural ecosystems.
(I; am; sure you know, weeds can be native or alien invasive plants that harm agricultural, disturbed, and natural ecosystems) (you; know; ) (weeds; can be; native or alien invasive plants that harm agricultural, disturbed, and natural ecosystems) (native or alien invasive plants; harm; )
I you weeds native or alien invasive plants
am know can be harm
sure you know, weeds can be native or alien invasive plants that harm agricultural, disturbed, and natural ecosystems
native or alien invasive plants that harm agricultural, disturbed, and natural ecosystems