"Those students live in a green building" should also be accepted, please fix this mistake.
Why isn't the article appended to the end of "studerende"?
"Studerende" is treated as an adjective (de studerende = lit. The studying (ones))
Because 'studerende' is a conjugated verb, only partly treated as a noun. (Those that are studying).
Solar panels on the roof, geothermal heat, a large bicycle rack out front...