1. Section B - Structural Questions (20 marks) (5 marks) What is mutualism? Give an example of mutualism. Explain your answer. 2. (5 marks) Give ONE example to show the interconnected relationship between the four spheres. Explain your answer. 3. Choose one of the following terms which matches the description. (10 marks) Biodiversity Ocean Thermal Energy Turbogenerator Biomass Energy Lithosphere Oil Recovery Ecosystems Respiration Photovoltaic cell Reactive nitrogen Coal Gasification Flat-Plate Collector Coal liquefaction Photosynthesis Non-reactive nitrogen (a) A term refers to the variety and variability of living organisms. (b) A process to produce 'petroleum-like liquid from coal under high pressure & temperature. (C) Akind of energy that is derived from present-day photosynthesis. (d) A device that is thin and broad with glass top and black bottom uses to heat water or warm the house. (e) It is a form of nitrogen e.g. dinitrogen gas (N2) that is biologically unavailable to living organisms. (t) It is a process to digest glucose in a cell to release energy and support growth. (g) It is a component in the power plant that generates electricity. (h) It's a type of power using thermal gradient between warm, upper surface water and cool, deep water to produce power. (0) A device that can convert sunlight to produce electrical power. () It is a non-living system constituting the Earth crust, rocks and minerals. End