How do nitrogen and chlorine catalyze the destruction of ozone?
What will be an ideal response?
Nitrogen eliminates ozone through the following cycle:
NO + O3 ? NO2 + O2
NO2 + O ? NO + O2
Net: O + O3 ? 2O2
Likewise, chlorine eliminates ozone through the following cycle:
Cl + O3 ? ClO + O2
ClO + O ? Cl + O2
Net: O + O3 ? 2O2
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A bar magnet broken in half becomes
A. no magnet. B. four magnets. C. two magnets. D. none of the above
Nearly all of the energy available on Earth comes from the ________
Fill in the blank(s) with the appropriate word(s).
What three-factor model is used for representing the impact on environment? What is a fourth factor that could be added to this? Give a simple explanation for each factor and describe what it means in terms of human impacts on the environment
What will be an ideal response?
Which of the following is TRUE about Global Positioning System (GPS)?
A) GPS has no scientific uses, but are great for recreational purposes. B) GPS is the same as remote sensing. C) GPS helped accurately determined the height of Mt. Everest. D) GPS is used solely by the military, who share information with physical geographers.