Biology · May / June 2024 · Paper 41 · Question 7
0610
As printed in the paper
The question as text
Fig. 7.1 is a flowchart showing the stages of eutrophication.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
7(a)[6]
nitrate / ammonium / phosphate(s) / ions ;
algae / plants / producers ;
light ;
photosynthesise ;
(aerobic) respiration ;
dissolved ;
7(b)(i)[1]
sigmoid(al) ;
7(b)(ii)[1]
lag ;
7(b)(iii)[1]
one from:
build-up of (named), toxins / waste / carbon dioxide ;
(change in) pH ;
high temperature ;
overcrowding ;
disease / virus attack ;
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.