Biological systems can be important carbon sinks

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Questions

1. Biological systems can be important carbon sinks, taking some of the excess CO₂ released by humans out of the atmosphere. If a manager wanted to understand how much CO₂ was being stored in a given area to determine what regions to focus on for protection, should they look at average Net Primary Productivity (NPP) or average Net Ecosystem Productivity (NEP) in a given area? Explain your choice.

2. A stock is a quantity measured at a specific time, and a flow is a measure of how much a quantity is changing over time (for example, the volume of water in a lake is its stock, and the amount of water flowing through a river at any point in time is a flow). Is Net Primary Productivity (NPP) a stock or a flow?.

3. Briefly explain what a positive feedback is, using the example of global warming, carbon dioxide, and water vapour.

Reference no: EM133943707

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