Main content
AP Bio: ENE‑3 (EU), ENE‑3.A (LO), ENE‑3.A.1 (EK), ENE‑3.B (LO), ENE‑3.B.1 (EK), ENE‑3.C (LO), ENE‑3.C.1 (EK)
Learn how organisms maintain homeostasis, or a stable internal environment.
Biology is brought to you with support from the
Amgen FoundationAmgen Foundation