Biology (Separate Science) · GCSE · AQA · AQA GCSE Biology - Foundation (8461) · Specification point · 4.7.2.3 · Ecology · Organisation of an ecosystem
Read Notes
Read clear notes for this topic.
Exam Questions
Coming soon
Flashcards
Flip through flashcards to lock it in.
Lesson
Coming soon
Ask Sage
Get help from Sage on this topic.
4.7.2.3 Decomposition (biology only)
| Content | Key opportunities for skills development |
|---|---|
Students should be able to explain how temperature, water and availability of oxygen affect the rate of decay of biological material. | |
Students should be able to:
| MS 1c, 4a, 4c |
Gardeners and farmers try to provide optimum conditions for rapid decay of waste biological material. The compost produced is used as a natural fertiliser for growing garden plants or crops. Anaerobic decay produces methane gas. Biogas generators can be used to produce methane gas as a fuel. |
Required practical activity 10: investigate the effect of temperature on the rate of decay of fresh milk by measuring pH change.
AT skills covered by this practical activity: AT 1, 3, 4 and 5.
This practical activity also provides opportunities to develop WS and MS. Details of all skills are given in Key opportunities for skills development.