What does the acronym BNG stand for?

• A. Biodiversity Quantity Gain
• B. Biodiversity Net Gain
• C. Biological Net Growth
• D. Biological Net Gain

Answer: (B)

Biodiversity Net Gain is the standard term used in planning and environmental policy, and it means delivering an overall increase in biodiversity after a project compared with the pre-development baseline. Developers measure biodiversity before the work and after completion, aiming for a net improvement (often a target such as 10%). The other phrases don’t fit the established terminology because they alter key parts of the concept—using “quantity,” “growth,” or “biological” instead of the recognized combination of biodiversity with net gain. This distinction matters because the policy focuses on a measurable, positive net change in biodiversity, not just preserving or increasing some aspect of biology.