CGP revision books

[Lifeisupanddown]

I've seen these revision books online and feel this will be perfect for my child who needs visuals to help them learn but I wondered what the difference was between the 3 books I've added photos of.
I did try and look in wh smiths at them properly but my smiths is always closed at the moment which is a pain. I wondered if anyone had them at home and could tell me.

1, the green one, this is just biology,.
2nd one, the burgandy one - is that the biology chemistry and physics mixed together, the same biology as the green one but made into a booj of 3 or does it have less contnet than the green one?
3rd, the one that says complete. How is that different to the other two?

Thank you to those who can help

Have a look on Amazon - I think there are images of the insides for all three.

iirc, the green and black&green ones have questions included - and yes, the green one is just biology.

The burgundy one has much fewer questions, I think. It is certainly much thinner than the black&green one.

Thanks. Amazon didn't have many images but the contents pages looked similar on each which helps me realise one might have extra questions but the content must be the same.