Option #1: atmospheric levels of co2
View the graph ground at: http://www.antarcticglaciers.org/glaciers-and-climate/ice-cores/ice-core-basics/, and the popular CO2 concentrations ground at: http://keelingcurve.ucsd.edu. Also, learn the exception on global warming in Chapter 11 of your textbook.
Compare popular CO2 levels to the primary concentrations from the spent 450,000 years. Based on basis from these websites and the textbook, rejoinder the aftercited questions:
- What is the popular CO2 concentration in talents per darling (ppm)?
- Is this better or inferior than the highs aggravate the spent 450,000 years?
- From which three sources do humans add CO2 to the sphere?
- Which two sources conduct CO2 out of the sphere?
- How does deforestation supply to the global warming process?
- Based on the basis, are humans contributing to global warming, or is it strictly a normal sunder of the cycle? Defend your rejoinder. You must search all of the basis, and use them to formulate your misrecord.
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