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The International Day for Biological Diversity, sometimes called World Biodiversity Day, is a United Nations holiday based on biodiversity issues. It 【小题1】(hold) on May 22 every year. The main topics 【小题2】(discuss) in the Rio Earth Summit of 1992 were the environment and sustainable (可持续的) development. Governments talked about ways 【小题3】(stop) the destruction of natural resources and protect ecosystems (生态系统). The day now focuses on the threats climate change poses to biodiversity. Experts say that solving both together will mean we have a better chance of 【小题4】(keep) the Earth’s natural riches.

Biodiversity is the total 【小题5】(vary) of all forms of life on our Earth. It includes not only all plant and animal species but also thousands, perhaps millions of ecosystems 【小题6】 make up our natural world. 【小题7】 word “biodiversity” arrived in 1985. It is a combination of the words “biological” and “diversity”. The word has grown into a very important idea we all need to understand. Respect 【小题8】 biodiversity means an understanding that we must help save our environment.

Today, biodiversity is one of the world’s most important 【小题9】(issue). Many say that together with climate change, damage to biodiversity is the 【小题10】(big) threat to our survival.

22-23高二上·全国·课后作业
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