The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

Aqa gcse biology - bl2hp & bl3hp

How's everyone?

Who's ready for the Biology exam tomorrow? Does anyone have any predictions or a specific topic for tomorrow's exam?

This is the official thread for BL2HP & BL3HP.
Original post by Mahee2499
How's everyone?

Who's ready for the Biology exam tomorrow? Does anyone have any predictions or a specific topic for tomorrow's exam?

This is the official thread for BL2HP & BL3HP.


There are quite a few threads for B2 and B3 floating around now, but I'll add my predictions anyway!

B2: speciation, digestive system, uses of glucose in plants
B3: heart/ blood, eutrophication, mycoprotein maybe, insulin/ glycogen

Good luck!
Reply 2
Avatar for Alyiza
Alyiza
4
**** its bio tomorrow? Ive been revising for physics >.<
What's eutrophication? Is that when excess nitrates enter water systems and remove all oxygen
Original post by iniajayo
What's eutrophication? Is that when excess nitrates enter water systems and remove all oxygen


Yep!
From s-cool:
Eutrophicationis what happens when too much chemical fertiliser is used on crops and itwashes into rivers and streams.The nitrates in the fertilisers are essential to get crops to grow well and increase yields.However, if too much is used, or it rains soon after it is added to fields, the fertiliser gets washed away. The nitrates then help plants in the rivers and streams to grow very quickly, especially algae.But after the initial massive growth in algae there isn't enough light and for them all and a lot of the algae die.All those dead plant start to decay. You are left with a green and slimy mess. This removes oxygen from the water and kills fish and other animals. Then even more algae and animals die.

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you