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Book 30, Question 123 · Video

Can a lake recover from acid rain?

Video · 1:48 · Crafty Clover explains, from A Million Whys Book 30

Yes. In the past, smoke from factories and smelters mixed with rain and made acid rain, which hurt lakes in places like Sudbury, Ontario. Many lakes lost fish and plants. Then cleaner technology cut the pollution, and people limed some lakes and planted trees. Scientists have watched many lakes slowly recover. The comeback shows that cleaning up helps.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Can a lake recover from acid rain?

The Big Idea

Acid rain once hurt many lakes! Can they ever get better? Yes!

Acid Rain

Step one: Acid Rain. In the past, smoke from factories and smelters mixed with rain and made acid rain. It hurt lakes in places like Sudbury, Ontario, and many lost fish and plants.

Cleaning Up

Step two: Cleaning Up. Then cleaner technology cut the pollution. People added lime to some lakes and planted millions of trees.

Recovery

Step three: Recovery. Scientists have watched many lakes slowly recover as fish and plants returned. The comeback shows that cleaning up really helps.

A Closer Look

Let's take a closer look! Cut way down. Cleaner. Added to lakes. Planted.

Quick Facts

Quick facts! Sudbury was once so barren that astronauts trained there on a moon-like landscape. Acid rain hurt lakes. Trees were planted. Lakes slowly recovered.

Think Like a Scientist

Now, think like a scientist! Fold a paper in half. Draw a lake hurt by acid rain on the left. Draw the recovered lake on the right. Add fish, plants, and trees. What changed?

Outro

Smoke from factories and smelters once made acid rain that hurt lakes around Sudbury, Ontario. Cleaner technology cut pollution, people limed lakes and planted trees, and many lakes have slowly recovered, showing that cleaning up helps. Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this