Biology 0610 · IGCSE · Nutrient cycles

Nutrient cycles — practice question

(a)[5]

Complete the flow chart shown in Fig. 6.1.

(b)[2]

State the names of two processes that occur in both the carbon and nitrogen cycles.

(c)[1]

State the main external source of energy for biological systems.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “lightning or root nodules” …