Chapter 15 Notes

Chapter 15 Notes - Chapter 15 Notes Over the past few...

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Chapter 15 Notes Over the past few decades, the global average temperature has increased noticeably. Feedbacks occur when one change leads to some other change, which can act to either reinforce or inhibit the original change. o Positive- one that enhances an existing trend of a change in climate, in which small changes can lead to large ones. An example is the ice-albedo temperature feedback. o Negative- one that damps out an existing trend of climate change. An example is the influence of carbon dioxide on plant photosynthesis rates. Air pollution is composed of airborne solid and liquid aerosols called Particulates , as well as gases that, when in high concentrations, seriously affect the lives of people and animals, harm plants, or threaten ecosystems. Pollutants can come from human activities (anthropogenic sources) or from natural sources such as dust storm and volcanic eruptions. o
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Chapter 15 Notes - Chapter 15 Notes Over the past few...

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