Exam 9: Global Atmospheric Changes

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Mitigating is an attempt at reducing greenhouse gas emissions to postpone global climate change.The earlier we implement mitigation strategies,the more effective they can be.Since climate change is essentially an energy issue,developing alternatives to fossil fuels that do not emit greenhouse gas emissions,such as solar and wind,is one major way to mitigate climate change.Reducing energy use through energy efficiencies will also reduce greenhouse gas emissions.Finally,carbon management strategies that separate,capture,and sequester carbon by such things as planting trees an also mitigate global climate change.Many climate experts however suggest that since some of the impacts of climate change are already upon us,and that human-induced global climate change will continue,that adaptation to climate change is necessary.Adaptation is responding to changes brought about by climate change through strategies that help various regions and sectors of society deal with the consequences of climate change.The most pressing among these changes is rising sea levels so people living in coastal areas could be moved inland away from the dangers of storm surges,massive sea walls could be built to protect coastal land,and rivers could be channeled to prevent salt water intrusion into fresh water supplies.We must also adapt by shifting agricultural zones as climate changes and developing heat and drought resistant varieties of crops,trees,and other economically important plants.