(a)[7]
Explain how the energy that first comes from the Sun is ultimately used to drive the muscles of a lion when it runs.
(b)[3]
Explain why it is now seen as important for human communities to recycle materials.
Biology 5090 · O Level · Energy flow
Energy flow — practice question
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Light energy converted into chemical energy in plants during photosynthesis” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI