What natural resources do we depend on, and how do we use them without using them up?
Describe Earth's key natural resources (water, soil, minerals, air, forests) and explain how resource management, conservation and sustainability balance human needs against the limits of Earth's systems.
A Regents answer on natural resources and management: the difference between renewable and non-renewable resources, the key resources (fresh water, fertile soil, minerals, air, forests), the meaning of conservation and sustainability, why resources are unevenly distributed, and how management balances human needs against Earth's limits, with worked exam questions.
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What this topic is asking
The Regents wants you to describe Earth's key natural resources and to explain conservation and sustainability: how management balances human needs against the limits of Earth's systems. The core idea is sustainable use, using a resource no faster than it can be replenished.
What counts as a natural resource
The key resources and why they are limited
- Fresh water: essential for life and farming, but limited. Most of Earth's water is salt water in the oceans or frozen in ice caps; only a small fraction is accessible fresh water, and it is unevenly distributed, so some regions face shortages.
- Fertile soil: forms slowly (the soil topic) but can be lost quickly to erosion, so it must be protected.
- Minerals and metal ores: non-renewable; concentrated deposits are finite and unevenly distributed.
- Clean air: a shared resource degraded by pollution.
- Forests: renewable if harvested no faster than they regrow, but easily lost to over-harvesting and clearing.
Conservation and sustainability
Uneven distribution
Resources are not spread evenly across Earth. Fertile soil, fresh water, fossil fuels, ores and forests are concentrated in particular regions because of geology, climate and geography. This uneven distribution shapes where people settle, how resources are traded, and why management and cooperation matter, a theme the new Earth and Space Sciences exam emphasizes under ESS3 (Earth and Human Activity).
Try this
Q1. Explain why fresh water is a limited resource even though Earth is mostly water. [2 points]
- Cue. Most water is salt water or frozen ice; only a small, unevenly distributed fraction is accessible fresh water.
Q2. Define sustainability. [1 point]
- Cue. Using resources to meet present needs without preventing future generations from meeting their needs (using renewables no faster than they regenerate).
Exam-style practice questions
Practice questions written in the style of NYSED exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Regents (style)1 marksPart A. Which practice best illustrates the sustainable use of a forest resource? (1) clearing all the trees at once for short-term profit (2) harvesting trees no faster than new ones grow and replanting (3) abandoning the forest entirely (4) burning the forest to clear land. Justify your choice.Show worked answer →
A 1-point multiple-choice question. The answer is (2).
Sustainable use means meeting present needs without preventing future use, so harvesting trees no faster than they regrow, and replanting, keeps the forest available indefinitely. Clearing all the trees at once (1) or burning the forest (4) destroys the resource; abandoning it (3) is not "use" at all. The trap is choosing maximum short-term yield; sustainability balances use against the resource's rate of renewal.
Regents (style)3 marksPart C. (a) Explain why fresh water is considered a vital but limited resource even though Earth is mostly water. (b) Define conservation. (c) Describe one way soil can be managed sustainably in farming.Show worked answer →
A 3-point extended-response question.
(a) 1 point: most of Earth's water is salt water in the oceans or frozen in ice; only a small fraction is accessible fresh water, and it is unevenly distributed, so it is limited despite the planet's abundance of water.
(b) 1 point: conservation is the careful use and protection of a resource to reduce waste and extend its availability.
(c) 1 point: any valid practice, for example crop rotation, contour plowing or terracing to reduce erosion, cover crops, or limiting overgrazing, all of which protect the soil and its fertility.
Markers reward the salt/ice/uneven-distribution reasoning for fresh water, the definition of conservation, and a valid sustainable soil practice.
Related dot points
- Distinguish renewable from non-renewable energy resources, describe the main sources (fossil fuels, nuclear, solar, wind, hydro, geothermal) and weigh their advantages and environmental costs.
A Regents answer on energy resources: the difference between renewable and non-renewable resources, the main sources (coal, oil and gas, nuclear, solar, wind, hydroelectric, geothermal), how fossil fuels form over geologic time, and the advantages and environmental costs of each for the Earth and Space Sciences exam, with worked exam questions.
- Explain how human activities (pollution, deforestation, land use, resource extraction) affect Earth's atmosphere, hydrosphere, geosphere and biosphere, and evaluate ways to reduce harm.
A Regents answer on human impact: how pollution, deforestation, land use and resource extraction affect the atmosphere, hydrosphere, geosphere and biosphere, examples such as air and water pollution, soil erosion and habitat loss, the idea of Earth's interconnected systems, and how to evaluate solutions, for the Earth and Space Sciences exam, with worked exam questions.
- Describe how carbon cycles among the atmosphere, biosphere, hydrosphere and geosphere through photosynthesis, respiration, decomposition and combustion, and explain how human activities alter the carbon cycle.
A Regents answer on the carbon cycle: how carbon moves among the atmosphere, biosphere, hydrosphere and geosphere through photosynthesis, respiration, decomposition and combustion, the role of carbon sinks (oceans, forests, fossil fuels), and how burning fossil fuels and deforestation move stored carbon into the air, with worked exam questions.
- Describe the water cycle and its processes, and explain the factors that control infiltration, runoff and groundwater storage (porosity, permeability, slope, saturation and the water table).
A Regents answer on the water cycle and groundwater: evaporation, transpiration, condensation, precipitation and runoff, the factors that control infiltration versus runoff (porosity, permeability, particle size, slope, saturation, vegetation), the water table and zones of saturation and aeration, and the energy that drives the cycle, with worked exam questions.
- Distinguish physical from chemical weathering, explain the factors that control the rate of weathering (climate, surface area, rock type), and describe how weathering and other processes form soil.
A Regents answer on weathering and soil: physical (mechanical) weathering such as frost wedging versus chemical weathering such as carbonation and oxidation, how climate, surface area and rock type control the rate, why warm wet climates weather chemically faster, and how soil forms as a mix of weathered rock and organic matter, with worked exam questions.
Sources & how we know this
- Earth and Space Sciences — New York State Education Department (2026)
- Regents Examination in Physical Setting/Earth Science — New York State Education Department (2026)