AP-ENVSCI-1.8-1.10

U1.4 Primary Productivity and Energy Flow

Define gross primary productivity (GPP) and net primary productivity (NPP). Identify trophic levels (producers, primary/secondary/tertiary consumers, decomposers). Apply the 10% rule to predict energy availability at higher trophic levels.

What you'll do in this lesson

A voice-first session with the Crimsora tutor on U1.4 Primary Productivity and Energy Flow, then targeted practice and FRQs — with the tutor adapting to where you get stuck.