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Level of atmospheric CO(2) has increased...

Level of atmospheric `CO_(2)` has increased in 2000 from

A

280 ppm to 360 ppm

B

250 ppm to 300 ppm

C

300 ppm to 340 ppm

D

330 ppm to 350 ppm

Text Solution

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The correct Answer is:
To solve the question regarding the increase in atmospheric CO2 levels in the year 2000, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Context of CO2 Levels**: - CO2 (carbon dioxide) is a greenhouse gas that traps solar heat in the atmosphere, contributing to global warming. - Historical data shows that CO2 levels have fluctuated over time, particularly influenced by natural events and human activities. 2. **Identify Historical CO2 Levels**: - During the ice age, CO2 levels were approximately 200 parts per million (ppm). - As the climate warmed during glacial periods, CO2 levels rose to about 280 ppm. 3. **Assess Current CO2 Levels**: - Due to increased fossil fuel burning and other pollution sources, CO2 levels have significantly increased in recent years. - By the year 2000, CO2 levels had risen to approximately 360 ppm. 4. **Evaluate the Given Options**: - The options provided are: - 280 ppm to 360 ppm - 250 ppm to 300 ppm - 300 ppm to 440 ppm - 330 ppm to 350 ppm - Based on the historical data and the current levels identified, the range that includes the CO2 level in 2000 is 280 ppm to 360 ppm. 5. **Select the Correct Answer**: - The correct answer is **280 ppm to 360 ppm**, as this range accurately reflects the increase in atmospheric CO2 levels from historical data to the year 2000. ### Final Answer: The level of atmospheric CO2 has increased in 2000 from **280 ppm to 360 ppm**. ---
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