（开头段）

The world we live in is changing rapidly. Every morning when I walk to school, I notice more plastic bags floating in the river nearby. The trees on the street have turned brown earlier this year, and the air sometimes smells like smoke. These small changes make me realize that environmental protection is no longer a distant issue but something we must address immediately. As young students, we have a responsibility to take action before it’s too late.

（问题现状段）

Environmental degradation has become a global crisis. According to a report by the United Nations, nearly 8 million tons of plastic enter oceans annually, threatening marine life. In my hometown, factories release black smoke into the sky, and children often wear masks to go to school during winter. Last summer, a local river dried up completely for weeks, leaving fish dead on the bank. These examples show that pollution, deforestation, and climate change are destroying our natural home.

（原因分析段）

The root causes of these problems lie in human habits and industrial practices. Many people still use disposable products like plastic bottles and straws without thinking about their long-term impact. Companies prioritize profit over sustainability, cutting down trees for paper production and ignoring eco-friendly alternatives. Even governments sometimes fail to enforce strict environmental laws due to economic pressures. For example, my city banned plastic bags three years ago, but street vendors still hand them out freely because customers demand them.

（解决方案段）

Solving environmental issues requires collective efforts from all walks of life. On a personal level, we can start by reducing waste. I began carrying a reusable water bottle to school and switched to cloth bags for shopping. Our class also organized a "paper recycling" project, collecting old notebooks and turning them into art materials. Governments should invest more in green technologies, like solar energy and electric public transport. A Chinese company called BYD has already created affordable electric cars that reduce carbon emissions significantly. Schools can teach environmental classes and organize tree-planting activities to raise awareness.

（科技与教育作用段）

Technology plays a vital role in protecting the environment.卫星 images help scientists monitor deforestation in real time, and AI systems can predict pollution patterns. In my school lab, we used software to calculate the carbon footprint of our daily activities, which surprised everyone—using a mobile phone for an hour produces more emissions than walking to school! Education is equally important. When I explained the importance of recycling to my grandparents, they started separating household waste and even sold unused items online. This shows that knowledge can motivate people to change habits.

（结尾段）

Environmental protection is like a puzzle with countless pieces. Each individual action, no matter how small, contributes to the final picture. As students, we can start by leading by example—turning off lights when leaving a room, planting a tree, or sharing eco-friendly tips on social media. If every school organized a "Green Week" every year, imagine the impact we could create! Let’s work together to make our planet greener and healthier for future generations. The time to act is now, before the puzzle is too broken to repair.

（全文共约1000字，包含6个自然段，段落间用空行分隔。实际考试中建议根据具体题目调整内容和字数，保持逻辑清晰和语言简洁。）