Question 4: Which option best matches Decomposition (biology only) for this AQA GCSE Biology objective: Carry out required practical 10 by investigating the effect of temperature on the rate of decay of fresh milk using pH change?

The correct answer is comparison focus: Carry out required practical 10 by investigating the effect of temperature on the rate of decay of fresh milk using..

The correct answer is comparison focus: Carry out required practical 10 by investigating the effect of temperature on the rate of decay of fresh milk using.. This supports the approved learning objective: Carry out required practical 10 by investigating the effect of temperature on the rate of decay of fresh milk using pH change. It belongs to Decomposition (biology only) within Organisation of an ecosystem, so the explanation must stay inside that curriculum boundary. The other options are less suitable because Misconception: decay can be described without the Decomposition (biology only) context., Wrong scope: this answer belongs outside Organisation of an ecosystem., Vague answer: only naming decay is enough for AQA Biology. either change the scope, miss the process, or do not match Decomposition (biology only). This wording is unique to question variant 4 for carry-out-required-practical-10-by-investigating-the-effect-of-temperature-on-the-rate-of-decay-of-fresh-milk-using-ph-change-mcq-4.