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Environmental systems and societies (ESS) Student Questions - Page 7 | RevisionDojo

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Environmental systems and societies (ESS)

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Student Questions

Environmental systems and societies (ESS)

What Are the Inputs; Outputs; and Storages of the Soil System?

Learn the inputs, outputs and storages of a soil system, how soil flows operate, and how to draw a precise systems diagram for IB ESS exams.

4.4 Water pollution

Why Are Anoxic/Hypoxic “Dead Zones” Becoming More Common?

Learn how nutrient pollution, sewage, warming and water stratification combine to increase aquatic dead zones in IB ESS Topic 4.4 Water pollution.

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How Do Transfers and Transformations Occur Within Soil?

Learn how transfers move matter through soil while transformations change its form, with IB ESS examples, key distinctions, and exam guidance.

What Is a Soil Profile and What Are Soil Horizons?

Learn how a soil profile shows vertical soil layers, what O, A, B and C horizons contain, and how to describe them accurately in IB ESS exams.

What Are the Inorganic and Organic Components of Soil?

Learn the inorganic and organic components of soil, how they support fertility, and the precise distinctions required for IB ESS Topic 5.1 exam answers.

How Does Soil Contribute to Biodiversity?

Learn how soil supports biodiversity through habitats, nutrient cycling, plant growth and ecosystem resilience for IB ESS Topic 5.1 Soil exams.

How Can Soil Act as a Carbon Sink, Store, or Source?

Learn how soil stores carbon, becomes a sink when inputs exceed losses, and acts as a source when decomposition and other carbon losses dominate in IB ESS.

Why Is Soil the Foundation of Terrestrial Ecosystems?

Learn why soil supports terrestrial ecosystems through plant growth, nutrient cycling, water storage, biodiversity, and carbon regulation in IB ESS.

What Is Soil Texture and How Does It Affect Primary Productivity?

Learn how sand, silt, clay and humus determine soil texture and influence water, nutrients, aeration and primary productivity in IB ESS.

What Factors Influence Soil Formation?

Learn how climate, organisms, geomorphology, parent material and time shape soil formation in IB ESS 5.1 Soil, with precise HL exam-ready terminology.

What Is the A Horizon and What Makes It Distinct?

Learn what the A horizon is, how it differs from O, B and C horizons, and why its humus, minerals, fertility and erosion risk matter in IB ESS exams.

How Do Sand, Silt, and Clay Soils Differ in Properties?

Compare sandy, silty, and clay-rich soils by particle size, drainage, aeration, nutrient retention, fertility, and sustainable management in IB ESS exams.

5.2 Agriculture and food

Why Is Land a Finite Resource Under Increasing Pressure?

Learn why land is finite, how population, farming, degradation and competing uses increase pressure, and how to frame an IB ESS exam response clearly.

5.2 Agriculture and food

How Do Agricultural Systems Vary Due to Soil and Climate Differences?

Learn how soil texture, fertility, rainfall and temperature shape agricultural systems, with IB ESS examples and exam guidance for Topic 5.2 students.

5.2 Agriculture and food

Why Does the World Produce Enough Food but Still Have Food Insecurity?

Learn why adequate global food production does not ensure food security, focusing on access, distribution, poverty, waste, conflict, and inequality in IB ESS.

5.2 Agriculture and food

Why Are Synthetic Fertilizers Used in Intensive Agriculture?

Learn why intensive agriculture uses synthetic fertilizers to replace soil nutrients, sustain high yields, and support food security, plus key trade-offs in ESS.

5.2 Agriculture and food

What Was the Green Revolution and What Techniques Did It Introduce?

Learn how the Green Revolution used high-yield crops, irrigation, fertilizers and pesticides, including its benefits, costs and ESS exam relevance.

5.2 Agriculture and food

What's the Difference Between Nomadic Pastoralism and Slash-and-Burn Agriculture?

Compare nomadic pastoralism and slash-and-burn agriculture in IB ESS, including their methods, sustainability, impacts, examples, and exam use.

How Is Carbon Released From Soil (Methane; Carbon Dioxide)?

Learn how decomposition and respiration release soil carbon as carbon dioxide in aerobic conditions and methane in anaerobic conditions for IB ESS HL.

5.2 Agriculture and food

What Global Strategies Exist to Achieve Sustainable Food Supply?

Learn the three IB ESS strategies for sustainable food supply: reduce demand and waste, lower emissions, and raise yields without expanding farmland.

5.2 Agriculture and food

What Is Regenerative Farming and Permaculture?

Learn how regenerative farming rebuilds soil and ecosystem functions, how permaculture designs whole farm systems, and how to distinguish them in IB ESS exams.

5.2 Agriculture and food

How Does Eating Lower on the Food Chain Affect Sustainability?

Learn how lower-trophic-level diets can reduce energy losses, land and water demand, and emissions, with IB ESS caveats and exam-ready terminology.

5.2 Agriculture and food

What Techniques Exist to Conserve Soil?

Learn how terracing, contour ploughing, cover crops, windbreaks and reduced tillage conserve soil, with an IB ESS case study and exam guidance.

5.2 Agriculture and food

How Does Supply Chain Efficiency Affect the Sustainability of a Diet?

Learn how efficient food transport, storage, processing and distribution reduce waste and environmental impacts, while affecting equity and food security.

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