Examples of land that are non-renewable include___________

Step 1: Analyze the question The question asks which example of "land" (in the economic sense) is a non-renewable resource.

Step 2: Explain the concept In Economics, "land" means all natural resources provided by nature, including soil, water, minerals, forests, and fossil fuels. These resources are grouped into two types:

• Renewable resources can be replenished or regenerated naturally within a reasonable time, for example forests, fish, water, and the air.
• Non-renewable resources exist in fixed amounts, or take millions of years to form, so they get used up. Examples are crude oil, natural gas, coal, and mineral ores such as tin and columbite.

Step 3: Check each option

• A. Marshy and water-logged land: This is a type of terrain. It can be drained and reclaimed, so it is not a depletable resource.
• B. Farmland used for many years: Soil fertility can be restored with fertilizer, manure, crop rotation, or fallowing, so this is renewable.
• C. Some natural resources such as natural gas: Natural gas is a fossil fuel. Once extracted and burned, it cannot be replaced within a human timeframe, so it is non-renewable.
• D. Oxygen and carbon dioxide in the atmosphere: These are continuously recycled through photosynthesis and respiration, so they are renewable.

Step 4: Answer

Exam tip: Think of "non-renewable" as "finite, and once gone, gone." Remember the list crude oil, natural gas, coal, minerals. If an option names a fossil fuel or mineral, it is usually the non-renewable one. Anything that nature or human effort can restore, such as soil, air, water, or forests, is renewable.