Biophysical processes, ecosystems, biodiversity and the way natural systems respond to change.
These are the statements the Geography syllabus makes about Earth's Natural Systems. Dux records each one against the questions you answer, so you can see which of them you have actually been tested on and which have never been asked.
The biophysical components of a system and how they interact across scales.
Trophic levels, nutrient cycling and productivity, and what happens when one link is removed.
Diversity, redundancy and the capacity of a system to absorb disturbance.
The carbon, nitrogen and water cycles, and the human alterations to each.
Succession, disturbance and tipping points, and why a system can look stable until it is not.
Climate, soil and latitude as drivers of biome distribution, with Australian examples.
Provisioning, regulating, cultural and supporting services, and the difficulty of pricing them.
HSC Geography - Examination Shape is 100 marks in 180 minutes. Questions on Earth's Natural Systems are not one shape repeated: the command word decides what the marker is looking for, and the mark value decides how much of it. These are the ones Geography uses.
Dux writes practice for this module in exactly these shapes, so the drill is the same task the paper sets — not a general knowledge quiz with the module name on it.
Earth's Natural Systems opens the Geography course. Students routinely lose marks because a question spans two modules, so the neighbouring modules are worth reading next to this one.
Dux diagnoses Geography dot point by dot point, then writes questions in the shape this course marks. Written answers come back marked against the bands.