Answer :
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1. **Defining Climate Change**: Climate change refers to long-term alterations in the Earth's climate system, particularly caused by human activities like burning fossil fuels, deforestation, and industrial processes. These activities release greenhouse gases into the atmosphere, leading to global warming and other significant changes in weather patterns.
2. **Providing Evidence**:
- One type of evidence supporting climate change is the increase in global temperatures over the past century. Data from scientific measurements, such as temperature records and satellite observations, show a clear warming trend.
- Another type of evidence is the melting of glaciers and polar ice caps. This melting is causing sea levels to rise, impacting coastal regions and ecosystems worldwide.
3. **One Main Action to Reduce Effects**: One effective way to mitigate climate change is transitioning to renewable energy sources like solar, wind, and hydropower. By decreasing reliance on fossil fuels, which are major contributors to greenhouse gas emissions, we can reduce the impact of climate change. Renewable energy sources produce energy with lower carbon footprints, helping to combat global warming and its associated consequences.
By taking steps like transitioning to renewable energy sources, individuals and communities can play a crucial role in addressing climate change and protecting the planet for future generations.