Edexcel A-level Biology B Paper 3 - 18th June 2025 [Exam Chat]

I also said that protecting young cod maintains global fish stocks since if the young ones die they won’t be able to reproduce. I also said if seagrass prevents erosion they won’t need to dredge as much

I got like 7

I actually found that paper pretty tough....timing and a few questions threw me off. Is it just me?

I actually found that paper pretty tough....timing and a few questions threw me off. Is it just me?

I actually found that paper pretty tough....timing and a few questions threw me off. Is it just me?

No honestly dw, I felt a similar way too

What did people say for 9 marker?
For value of seagrass I said:
1. Provides habitat for cod, increases biodiversity/species evenness and richness
1.1. Cod beneficial to UK economy, benefits human populace.
2. Prevents erosion of coastal areas thus protecting marine life and beach-based life from going extinct due to erosion of habitats.
2.1. Prevents further inland biodiversity loss from cascading extinctions.
3. Absorbs carbon.
3.1. Limits global warming which would increase sea life, see above for coastal talking points.
3.2. Prevents carbonic acid buildup in ocean leading to enzyme and protein denaturation.
For value of project:
1. Promotes biodegradeable methods.
1.1 Prevents further pollution as a result.
2. Preliminary test to see if it works.
2.1 If successful, can be replicated on larger scale in UK or other countries, new area to protect, would be feasible with benefits it brings to cod economy.
3. Helps act against global warming even during testing.
4. May lead to other hectares popping up due to seagrass reproduction.

Also what did people get for:
K for bacteria? (Can't remember what it was exactly)
Quadrat that was the best? (I got the 0.01 one as that showed 60 which was closest)
T? (-2.03 or something like that? Also what did people choose for degrees of freedom? Wasn't sure if it was 15, 16, or 30 lol. Not that it really makes a huge difference to the answering of that question tbh, it'd all be 10% significant for me.)
Magnification?

Hi, does anyone have predictions for what the grade boundaries will be. Last year it was:
A* - 205
A - 170