🌵 World Day to Combat Desertification and Drought – 17th June Land • Restoration • Sustainability • Climate Action Observed annually on 17th June , the World Day to Combat Desertification and Drought highlights the urgent need to protect land resources and combat land degradation. Desertification and drought threaten ecosystems, food security, water availability, and livelihoods across the globe. 🌍 Why Land Matters Supports agriculture and food systems Maintains biodiversity Regulates climate and water cycles Provides livelihoods for billions Ensures environmental stability Healthy land sustains life. ⚠️ Causes of Desertification Deforestation Overgrazing Unsustainable farming practices Climate change Water mismanagement Degraded land weakens ecosystems and communities. 🌱 Solutions and Actions Promote sustainable land management Restore degraded ecosystems Conserve water resources Support climate-resilient agriculture Rai...
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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