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♻️ International Day of Zero Waste – 30th March

♻️ International Day of Zero Waste – 30th March    Sustainability • Circular Economy • Responsible Consumption International Day of Zero Waste , observed annually on 30th March , promotes sustainable consumption and production patterns to address the global waste crisis. The day highlights the urgent need to reduce waste generation and transition toward circular economy models that prioritize reuse, recycling, and responsible resource management. 🌍 Why Zero Waste Matters Reduces environmental pollution Conserves natural resources Lowers greenhouse gas emissions Promotes sustainable economic systems Protects biodiversity and ecosystems Waste reduction is essential for climate resilience and environmental protection. 🔄 Principles of Zero Waste Refuse unnecessary products Reduce consumption Reuse materials creatively Recycle responsibly Compost organic waste Small behavioral changes collectively create significant environmental impact...
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How does Earth maintain a constant level of oxygen?



It doesn’t! The oxygen level of the planet has varied quite dramatically in the last 500 million years. It was 35 per cent during the Carboniferous period, around 300 million years ago; as the climate, cooled and land plants died off, oxygen fell to as low as 12 per cent by the beginning of the Triassic. Back then, the air at sea level would have felt thinner than at the top of the Alps today.


Burning fossil fuels has reduced oxygen levels very slightly – about 0.057 per cent over the last 30 years. Deforestation only has a small effect because when rainforest is cut down, other plants are usually grown in its place. But it’s marine phytoplankton (plant plankton), rather than trees, that produces about 75 per cent of atmospheric oxygen. Global warming will have a significant impact on phytoplankton, which is a much more serious threat to oxygen levels. 



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