Current Concentration of CO₂ in the Atmosphere Is _______ According

question 62

Multiple Choice

Current concentration of CO₂ in the atmosphere is _______ according to the Keeling graph.

• A)300ppm
• B)375 ppm
• C)over 400ppm
• D)350ppm

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Definitions:

Raw Materials

Basic materials that are used in the production of goods, finished products, or intermediate materials that are feedstock for future finished products.

Labour

The human work effort, both physical and mental, used in the production of goods and services.