Identify the harmful environmental issues and example

http://en.wikipedia.org/wiki/Environmental_issue

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Harmful environmental issues are problems that cause damage to the environment and its ecosystems. Here are a few examples:

1. Climate Change: This is the long-term alteration in temperature and typical weather patterns. It is primarily caused by the accumulation of greenhouse gases in the atmosphere from human activities like burning fossil fuels (coal, oil, and natural gas) and deforestation.

To identify climate change as a harmful environmental issue, you can:
- Look for scientific reports and studies from reputable sources (e.g., Intergovernmental Panel on Climate Change) that provide evidence of rising global temperatures, melting polar ice, extreme weather events, and increasing sea levels.
- Examine weather patterns and record temperature data in your region over an extended period to identify any significant changes.

2. Air Pollution: This refers to the presence of harmful substances in the air, such as emissions from transportation, industrial activities, and the burning of fossil fuels.

To identify air pollution as a harmful environmental issue, you can:
- Monitor air quality indexes provided by local authorities or environmental agencies.
- Observe visible signs of air pollution, such as smog, haze, or the presence of pollutants like particulate matter, nitrogen dioxide, and sulfur dioxide.
- Refer to scientific studies and reports that investigate the impact of air pollution on human health and the environment.

3. Water Pollution: This happens when harmful substances contaminate freshwater bodies, including rivers, lakes, and groundwater. Pollution can occur from industrial waste, agricultural runoff, sewage discharge, and improper disposal of chemicals.

To identify water pollution as a harmful environmental issue, you can:
- Conduct water quality tests in affected areas and analyze the presence of pollutants like heavy metals, pesticides, and bacteria.
- Monitor changes in flora and fauna populations in water bodies, as pollution can disrupt aquatic ecosystems.
- Refer to reports from environmental agencies, non-profit organizations, and scientific studies that highlight specific incidents of water contamination and its impact on humans and aquatic life.

These are just a few examples of harmful environmental issues. It's important to stay informed by referring to credible sources and scientific evidence to better understand and address these challenges.