Keystone Species Rule · January 2026 Biology Regents cluster

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Keystone Species Rule is cluster 3 of 10 on the January 2026 Regents Examination in Life Science: Biology (questions 10–13). Each question is shown with its answer key and the performance expectation it assesses.

Question 10 · HS-LS2-6

January 2026 Biology Regents question 10, Keystone Species Rule cluster
Answer key: January 2026 Biology Regents question 10, Keystone Species Rule cluster


Question 11 · HS-ESS2-6

January 2026 Biology Regents question 11, Keystone Species Rule cluster
Answer key: January 2026 Biology Regents question 11, Keystone Species Rule cluster


Question 12 · HS-LS2-7

January 2026 Biology Regents question 12, Keystone Species Rule cluster
Answer key: January 2026 Biology Regents question 12, Keystone Species Rule cluster


Question 13 · HS-LS2-8

January 2026 Biology Regents question 13, Keystone Species Rule cluster
Answer key: January 2026 Biology Regents question 13, Keystone Species Rule cluster