AQA A2 Environmental Studies/Science

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Reply 100

scottwhite

true.. how are you feeling for envs4?

Reply 101

Aaron Penberthy

Original post by scottwhite

true.. how are you feeling for envs4?

Most of my work done in ENVS3 so will start ENVS4 today and probably in about an hour xD

Reply 102

scottwhite

i need to revise psychology. it's so content heavy and doesn't give me time to do other a levels haha. will probably start on envs4 tuesday afternoon...... this is a bad plan lol

Reply 103

Aaron Penberthy

Original post by scottwhite

i need to revise psychology. it's so content heavy and doesn't give me time to do other a levels haha. will probably start on envs4 tuesday afternoon...... this is a bad plan lol

Yea I finished psychology a level last year, was bloody difficult got a B in the end; spent so much time on G543 that I ended up with 91/100 UMS but then got a high C only on G544...

Reply 104

greencat55

Original post by Aaron Penberthy

Organic mercury is liposoluble and can therefore pass into the brain and placenta whereas inorganic mercury cannot.

Ahh I put organic affects brain and inorganic doesn't but I couldn't remember why :/

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Reply 105

SodaDreamer

I think that went okay, I've definitely lost a few marks on the graphs/maths questions but I think I've pulled it back with the essay. Time will tell ): it's usually around 67% for an A i think?? So we shall see :smile:

Reply 106

darkdetective

That exam could have gone so much better, though I suppose so much worse too. :s-smilie:

Reply 107

Chihiro_

Thought that paper sucked, it really lacked a range of topics from the specification. I spent SO long revising atmospheric pollution and controls and it hardly came up! The graphs confused me so much too, and by the sounds of it i got the noise calculation wrong.

On the bright side some questions were gifts, thought my essay was decent (did the one on problems of renewables) and just put in all of my knowledge! The pesticide question was good for 5 marks too.

That whole battery question messed me around though :frown:

and I almost ran out of time

Desperatly need a B, just putting everything into ENVS4 now! I'm much better at that so fingers crossed eh?

Reply 108

Jakeplattt

Not going to lie I'm pretty smug I predicted and revised the energy essay as the others weren't the nicest

Reply 109

joeheat

What did everyone put for the pesticide question been on my mind since I remembered the question . I talked about specificity and solubility and like DDT and pesticide inside the crop etc??

Reply 110

scottwhite

Original post by joeheat

What did everyone put for the pesticide question been on my mind since I remembered the question . I talked about specificity and solubility and like DDT and pesticide inside the crop etc??

I put organophosphates and organochlorines. Couldn't remember the properties for each group so I just wrote about the general effects of pesticides e.g harm non target species and bio accumulation etc...

Reply 111

Aaron Penberthy

Original post by scottwhite

Organochlorines e.g. DDT - persistent, liposoluble so biomag and bioaccumulate, low mammal toxicity, high insect toxicity - need to say thus kills invertebrates reducing biodiversity but can be harmful in mammals as it bioaccumulate in body tissues and bio magnifies up food chain so toxicity becomes high in mammals - half life of 15 years
Organophosphates e.g. No idea haha - not persistent, doesn't bioaccumulate or biomag as not liposoluble, low insect toxicity but high mammal - so dangerous upon application e.g. Damaged a bunch of sheep farmers nervous systems
Pyrethroids e.g. Pyrethrum - persistent, not liposoluble, low mammal and insect toxicity but very high toxicity to aquatic species - enzyme inhibition and respiration problems

I think this is what will be on mark scheme ^^ might of got some stuff wrong but that's what I wrote

Reply 112

scottwhite

Original post by Aaron Penberthy

Yeah that sounds about right. I'm sure I picked up a few marks from saying bio-accumulation and actually naming the different groups! E.g organophosphates

Reply 113

ellen999

Any predictions for tomorrow's essay?

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Reply 114

Underc0verEmily

Can you get short answer questions specifically on sustainably? Like how can biotic resource exploration become more sustainable? Ugh sustainability is such a wide topic!

Reply 115

AmyT997

I'm panicking! I haven't done any revision for this since Easter because I've focused on bio and chem as I've consistently got A*'s in every mock because i revised as i went along but now i have forgotten everything! To make this worse i have lost every bit of motivation for revise that i never even had in the first place! Any tips for cramming?!