Source : https://www.youtube.com/watch?v=gUt__nYl7sY
Unit 1: How do living things stay alive?
1. How do organisms function?
2. How do living systems sustain life?
3. Practical investigation (into the survival of an individual or a species)
Unit 2: How is continuity of life maintained?
1. How does reproduction maintain the continuity of life?
2. How is inheritance explained?
3. Investigation of an issue (involving reproduction and/or inheritance)
Source : https://www.youtube.com/watch?v=mKWxeMMFTEU