Summary
The algae act like tiny cleaners, making water safer to use.
This natural method could help many towns with polluted rivers.
Key Points
3 points1
Blue‑green algae can capture lead metal.
2
The process does not use harmful chemicals.
3
It offers a cheap way to clean drinking water.
New Words to Learn
6 wordsalgae
tiny water plants that grow in ponds
lead
a heavy metal that can make water unsafe
sustainable
something that can be used for a long time without hurting nature
environment‑friendly
kind to nature and does not cause pollution
contaminated
dirty or polluted with harmful stuff
researchers
people who study and test new ideas
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