Which of the following is a renewable natural resource?
Biological diversity
The question asks us to identify which of the given options is a renewable natural resource. Let's examine each option to determine the correct answer:
- Biological Diversity: Biological diversity, or biodiversity, refers to the variety of life forms on Earth. This includes different plants, animals, and microorganisms, as well as the genetic differences within these species. Biodiversity is considered a renewable resource because it can be replenished naturally through various ecological processes, provided that the ecosystem is managed sustainably.
- Tin: Tin is a metal found in natural ore deposits. It is non-renewable because it exists in a fixed amount within the Earth's crust and cannot be replenished on a human timescale once mined.
- Natural Gas: Natural gas is a fossil fuel that forms from the remains of ancient marine organisms. Similar to other fossil fuels, it is non-renewable because it takes millions of years to form.
- Salt: Salt is a mineral that can be harvested from natural deposits or evaporated from sea water. It is considered non-renewable when mined in large quantities from geological deposits. However, due to its abundant availability in sea water, some may argue it is renewable. Yet, it is not typically categorized as such in environmental terms.
Based on this analysis, the correct answer is Biological Diversity, as it is the only truly renewable resource among the options provided.
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