Brand New Cluster Questions for NGSS and NYSSLS TOPIC 1: Structure and Function, with a Winter theme. Discover how the Balsam Fir Tree produces its appealing scent and how the structure of the stomates helps maintain homeostasis in this beloved plant. Not just for Winter! This exercise can be used at any time of the year! The language mirrors the NYS Performance Level Descriptions and would serve as excellent Regents Exam review in June! This resource contains stimulus material which may include