on earth day, the college hunks found some condemned properties and trashed lots in newark, nj and donated their time and services to greenup the properties
college hunks hauling junk's environmentally friendly way of removing and disposing of junk
"on earth day, the college hunks found some condemned properties and trashed lots in newark, nj and donated their time and services to greenup the properties" What is the definition of "greenup"?