Cystine (Cys2) possesses a weak absorption maximum of similar strength as phenylalanine at 250 nm.

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#Unit 10. Ecological Principles

The Greenhouse Effect Causes the Earth’s Temperature to Rise

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#Id: 5873

#Unit 10. Ecological Principles

Solar radiation, in the form of short-wave energy, passes through the atmosphere to heat the Earth’s surface. 

Long-wave infrared energy is radiated back into the atmosphere. 

Most infrared energy is reflected by atmospheric gases, including carbon dioxide molecules, back to Earth, causing global temperatures to rise.

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#Unit 10. Ecological Principles

The greenhouse effect is caused by the insulating effect of atmospheric carbon dioxide.

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#Unit 10. Ecological Principles

Relative absorption per ppm of increase 

CO2= 1

Methane= 32

Nitrous oxide= 150

Chlorofluorocarbons= >10000

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#Id: 5876

#Unit 10. Ecological Principles

Atmospheric concentration (ppm)

CO2= 381

Methane= 1.75

Nitrous oxide= .315

Chlorofluorocarbons= 0.0005

TLS Online TPP Program

#Id: 5877

#Unit 10. Ecological Principles

Contribution to global warming

CO2= 73%

Methane= 7%

Nitrous oxide= 19%

Chlorofluorocarbons= 1%