1. Air pollution: caused by emissions from vehicles, factories, and burning of fossil fuels. Solutions include transitioning to renewable energy sources, improving public transportation, and implementing stricter emissions regulations.

2. Water pollution: caused by industrial waste, agricultural runoff, and improper disposal of chemicals. Solutions include implementing better waste management practices, reducing the use of harmful chemicals, and investing in water treatment facilities.

3. Plastic pollution: caused by the improper disposal of single-use plastics. Solutions include reducing plastic consumption, promoting recycling and composting, and implementing bans on single-use plastics.

4. Deforestation: caused by logging, agriculture, and urban development. Solutions include promoting sustainable forestry practices, protecting endangered habitats, and reforestation efforts.

5. Climate change: caused by greenhouse gas emissions from human activities. Solutions include reducing carbon emissions, transitioning to renewable energy sources, and implementing policies to mitigate the effects of climate change.

6. Noise pollution: caused by traffic, construction, and industrial activities. Solutions include implementing noise regulations, using sound barriers, and promoting quieter transportation options.

7. Light pollution: caused by excessive artificial light at night. Solutions include using energy-efficient lighting, shielding outdoor lights, and promoting dark sky initiatives.

Overall, addressing these environmental problems requires a combination of individual actions, government regulations, and international cooperation to protect our planet for future generations.