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为什么一些湖泊在干旱季节会从蓝色变成粉红色？

Certain shallow lakes turn pink when evaporation concentrates salts and triggers microbial blooms.
Specialized archaea and algae, like Dunaliella salina, produce red carotenoid pigments under high-salt stress.
These microbes thrive where salt levels exceed 15%, far above normal seawater concentration.
Sunlight exposure and warm temperatures further boost pigment production during dry months.
The color intensifies as water volume shrinks and light reflects off dense microbial layers near the surface.
Lake Hillier in Australia and Lake Retba in Senegal show this phenomenon seasonally.
No toxic chemicals cause the shift — it is entirely natural and reversible with rainfall.
Scientists study these lakes to understand life limits in extreme environments on Earth and Mars.
The pink hue does not indicate pollution but rather a delicate ecological balance of salinity and biology.
When rain refills the lake, dilution returns it to pale blue or green within weeks.

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Sunlight exposure and warm temperatures further boost pigment production during dry months. 阳光照射和温暖气温在干旱月份进一步促进色素生成。
Certain shallow lakes turn pink when evaporation concentrates salts and triggers microbial blooms. 某些浅湖在蒸发使盐分浓缩并引发微生物大量繁殖时会变成粉红色。
These microbes thrive where salt levels exceed 15%, far above normal seawater concentration. 这些微生物在盐度超过15%的环境中繁盛，远高于正常海水浓度。

这篇中文题目最接近哪一句？为什么一些湖泊在干旱季节会从蓝色变成粉红色？一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？某些浅湖在蒸发使盐分浓缩并引发微生物大量繁殖时会变成粉红色。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Why Do Some Lakes Change Color From Blue to Pink During Dry Seasons? How to cook noodles A maths worksheet

Sunlight exposure and warm temperatures further boost pigment production during dry months.

Sunlight exposure and warm temperatures further boost pigment production during dry months.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Sunlight exposure and warm temperatures further boost pigment production during dry months.