Because unlike nonflammable materials, wood still has the ability to burn.
Answer:
There are many many things in the world that produces Carbon. The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation. All of these produce Carbon into the atmosphere and warm the planet
The mathematical evaluation methods use to calculate benefits and costs can make the calculation of cost benefit analysis to be very complicated. The definitions and calculations of benefits and costs are quite controversial in term of the valuation and discounting calculation methods that are applied to them.
