While turning a compost heap, a student observes earthworms, fungi and beetles.
State which level of organisation comes immediately after an individual organism as the scale increases.
All the organisms living and interacting in the compost heap are considered together. State the term for this group.
State what must be included, as well as the living organisms, when describing the compost heap as an ecosystem.
State whether each factor is abiotic or biotic.
| Factor | Classification |
|---|---|
| Temperature in the heap | |
| Competition among earthworms for food |
82 exam-style questions on Edexcel GCSE Biology 9.1 Ecosystems and interdependence, covering 9.1.1 Levels of organisation in ecosystems, 9.1.2 Abiotic and biotic factors, 9.1.3 Importance of interdependence, 9.1.4 Parasitism and mutualism, and 9.1.5 Determining number of organisms in an area. Each one has a worked solution and a mark scheme showing where the marks go.