National Arbor Day🌲植树节

1. Did you know that algae and trees were the first forms of life onearth five million years ago? It wasbecause they produced oxygen that human beings could evolve so quickly. Today, there are billions of people inhabiting our planet, and our living environment has undergone many changes. Dowe still need trees? Absolutely! 2. And we can’t live without oxygen. They also absorb CO2 from the air. This is a good thing because the increasing emission of greenhouse gases is releasing so much CO2 into the atmospherethat the result is an acceleration of global warming. By absorbing CO2, trees are slowing this process immediately. 3. But this isn’t all. A single tree supports the lives of more than 250 species of plants and animalsand so contributes to biodiversity. For instance, with its pollen, bee colonies can pollinate other plantsand keep them reproducing. 4. Furthermore, trees provide a natural cooling effect, enhance good drainage, serve as a shelter from the wind... and make people… happier! What will you do to make our world greener?  你知道500万年前，藻类和树木是地球上最早的生命形式吗？正是因为它们产生了氧气，人类才能如此迅速地进化。今天，我们的地球上居住着数十亿人，我们的生活环境也发生了许多变化。我们还需要树木吗？当然需要! 我们的生存离不开氧气。它们还能吸收空气中的二氧化碳。这是一件好事，因为温室气体排放量的增加，正在向大气中释放大量的二氧化碳，其结果是加速了全球变暖。通过吸收二氧化碳，树木立即减缓了这一过程。 但这还不是全部。单单一棵树就支持了250多种动植物的生存，所以对生物多样性做出了贡献。例如，利用它的花粉，蜂群可以给其他植物授粉，让它们不断繁衍。