Edexcel biology paper 2Watch this thread
The combustion of the candle does produce carbon dioxide, I think? If it does then it would stop because the combined intake of oxygen for respiration and combustion is at a higher rate than the production of oxygen in photosynthesis.
I’ve messed up the heart question! I got everything right except the names of the valves. I said the semi lunar valve when it was meant to be the triscupid if you get me. On both sides.. how many marks will I drop?