Question: What sort of issues were Zenlenyi Svit and Noosfera concerned with?
Sentence: On November 13, 1988, approximately 10,000 people attended an officially sanctioned meeting organized by the cultural heritage organization Spadschyna, the Kyiv University student club Hromada, and the environmental groups Zelenyi Svit ("Green World") and Noosfera, to focus on ecological issues.
Answer in sentence: yes