For ecosystems at risk, any question will suit me fine so long as the BOS doesn't break trend and specifically ask for 2 ecosystems.
For economic activity, I'd love global activity (tourism). Not so happy abotu a local enterprise.
For Urban Dynamics (I disliek this), I love world cities...
If you don't sign out, they're going to send out the new Year 12 goons to go hit you in the back of a legs with a heavy physics or chemistry textbook until you pay up and sign-out.
I said it wasn't at equilibrium. At first i did, then I realized I'd fucked teh calculation so I fixed it and realized it wasn't at equilibrium (didn't think it was either by looking at the equation).
I got the same for the identity of the gas, the 80L of petrol and the H2 gas required calculations. Can't remember for the titration and I'm pretty sure I screwed the zinc tablet question, although thankfully it as only worth 2 marks.
I didn't really mind the industrial chem option. Other options were certainly harder. I screwed the equilibrium constant one in industrial chem so had to go back and fix it up after I realized what a stupid mistake I made in forgettign to find the cocnentration from the given table!!!