She believes scientists should work together to prevent the decline of megafauna.
4. Why did sponges lose their brains?
According to the article, having a brain offered insufficient benefits for sponges.
5. True or false? Mammals with big brains increase the risk of extinction for humans.
False: Humans increase the risk of extinction for large mammals.
2. 请你在不参考课文的情况下完成下列练习。选择一个意思合适的单词填入句子的空格处 。
1. Being a famous, sexy, wealthy, popular celebrity does come with one bigdownside: you have no privacy.
2. A mother tiger protecting her young will viciously attack potential threats.
3. Sponges have gone from strength to strength since losing their brains.
4. If you tell him directly it will only exacerbate the problem. Find another way to let him know.
5. She's the brainiest person I know! Straight A-grades again last year.
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