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QUESTION 7 What is the minimum requirement for maintaining a sustainable flow of water in a river system? (A) maintaining the level of water extraction below annual recharge (B) _ stabilising the riparian vegetation along the river system (C) constructing flood levees to control water flow (D) maintaining biodiversity in the river ecosystem
QUESTION 20 (13 marks) This question refers to Stimulus 5 6 and 7 in the stimulus book. a) Use Stimulus 5 to contrast the percentage change in the commercial catch of blue swimmer crabs and spanner crabs between 2008 and 2017. [5 marks] b) Use Stimulus 5-7 to draw conclusions about the long-term sustainability of each crab species as commercial native biota. Justify your conclusions using two pieces of evidence for each crab species from any of the stimulus. [6 marks] c) Use Stimulus 6 and 7 to explain two ways to improve the sustainability of either crab species. [2 marks]
QUESTION 4 Which renewable energy source includes an energy transformation that relies on pressurised gas to drive turbines? (A) geothermal (B) fossil fuels (C) nuclear (D) solar
QUESTION 9 The principles of ecologically sustainable development support (A) extracting water from a river system 1f environmental flows are maintained. (B) using native forests and hardwood plantations to produce wood products. (C) using steel rather than timber in all new housing developments. (D) importing fish from overseas to conserve local fish stocks.
QUESTION 20 (5 marks) The map models changes in winter sea surface temperature from 2006 to 2100. 30.0°S 35.0°S Melbourne 40.0°S 45.0°S / _\ 140.0° E 150.0° E 160.0° E a) Explain a likely change in fisheries distribution and sustainability in area A. b) Identify a mitigation strategy for the change identified in Question 20a) that could be implemented by the Australian government. c) Identify a mitigation strategy for the change identified in Question 20a) that could be implemented by local fisheries. Temperature change (°C) [3 marks] [1 mark] [1 mark]
QUESTION 3 The operational time of a mineral sands quarry is limited because mineral sands (A) are replenished within a human lifespan. (B) have a greater deposition rate than extraction rate. (C) are formed from source rock through slow geological processes. (D) are formed from the decomposition of plants and animals from millions of years ago.
QUESTION 16 Geological and weather conditions for four locations are shown. Location | Tectonic Distance Average Average Average Elevation activity from coast | wind speed | annual sunshine | annual rainfall | above sea (km) (km/h) (hours) (mm) level (m) Moderate 1549 Moderate 1653 High 9 10 15.000 1322 2030 Compared to locations 1 3 and 4 location 2 is the most suitable location for which form of renewable energy? (A) solar (B) wind (C) geothermal (D) hydroelectric
QUESTION 1 (7 marks) Refer to Stimulus 1 in the stimulus book. a) Explain why groundwater is a renewable resource. [1 mark] b) Explain the change in recharge between 1970 and 2023. Support your response using evidence from the graphs. [3 marks] c) Make a justified prediction about the future sustainability of groundwater in the basin. [3 marks]
Difficulty: B
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Paper 2
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2023
QUESTION 2 A major sustainable component of seaweed fertiliser is brown algae. This is because depletion of this resource (A) is less than the rate of replenishment. (B) is greater than the rate of replenishment. (C) is less than the annual yield of the resource. (D) is greater than the supply of the natural resource.
QUESTION 14 Which is the most important process for ensuring sustainable ground water use in a regional catchment area? (A) to maintain water usage at levels below annual net recharge volumes (B) to minimise effect of water salinity on river ecosystems (C) to meet environmental demands of the catchment area (D) to meet demands of urban development
QUESTION 23 (8 marks) a) Describe why fish stock biota is considered a renewable resource. [1 mark] b) Using Stimulus 4 in the stimulus book identify the trend in global wild caught seafood production from 1990 to 2020. [1 mark] c) Using Stimulus 4 contrast the trends for wild caught seafood aquaculture production and per capita consumption from 1950 to 2020. Give reasons for differences between the trends for each. [6 marks]
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