Hiiiii!
The past papers just wreck my head, I feel like I don't know anything D:
I need an A too so I'm just going to keep my fingers crossed haha
I kinda like those, but it depends what it's asking. For the pH one I'd just say to have several pots, all with the same seeds (number and type) and all under the same conditions but every pot has to have different pH. After some time check and calculate like percentage germination (?), repeat several times blah blah
Oh god haha don't remind me xD