What is the most common source of co2 emissions

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Reference no: EM133393584

Questions:

1- Explain those three methods we use to understand how climate has been changing over time :

a. Evaluation of the geologic record

b. Monitoring/measurement world-wide

c. Mathematical/Computer modeling

2- What is the most common source of CO2 emissions?

3- How do ice cores provide CO2 level data that is thousands of years old?

4- If CO2 levels have changed over the past 400,000 years, what evidence do we have that shows human impacts are changing CO2 levels currently?

Reference no: EM133393584

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