These questions intentionally pull together many threads. Since no one question is usually worth more than 8 points, we will make these all worth 8; maximum possible.
A. Explain how energy and nutrients enter, move through, and exit a food chain in an ecosystem. [? marks]
B. Outline the importance of [fungi/ top carnivores/ keystone species/ plants] to other populations in their community [etc.] [8 marks]
C. Outline the importance of [fungi/ top carnivores/ keystone species/ plants] to other populations in their community [etc.]
D. In communities, groups of populations live together and interact with each other. Outline the importance of plants to populations of other organisms in a community. [8 marks]
E. Outline ways in which leaves take part in the carbon cycle in ecosystems, apart from photosynthesis. [6 marks]
F. Explain how energy enters a community, flows through it and is eventually lost. [8 marks]
G. Discuss causes and effects of the greenhouse effect and ways to control it. [8 marks]