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Book 30, Question 134 · Video

How do wetlands act like nature's water filter?

Video · 1:49 · Crafty Clover explains, from A Million Whys Book 30

Wetlands such as marshes and swamps slow down water as it flows through thick plants. The plants and soil trap mud and absorb extra nutrients, and tiny microbes break down some pollution. The water that leaves is cleaner than the water that came in. Wetlands also soak up floods and give homes to birds, frogs, and fish. Many have been protected or restored for these reasons.

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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. How do wetlands act like nature's water filter?

The Big Idea

Wetlands clean water naturally! Like a giant filter. How?

Slowing Down

Step one: Slowing Down. Wetlands such as marshes and swamps slow water down as it flows through thick plants. Slower water drops its mud and grit.

Cleaning

Step two: Cleaning. The plants and soil trap mud and absorb extra nutrients. Tiny microbes break down some pollution, so the water that leaves is cleaner than the water that came in.

More Jobs

Step three: More Jobs. Wetlands also soak up floods like a sponge and give homes to birds, frogs, and fish. Many have been protected or restored for these reasons.

A Closer Look

Let's take a closer look! Slow water. Traps mud. Break down. Live there.

Quick Facts

Quick facts! People also build wetlands to treat wastewater. Plants slow water. Wetlands soak up floods. Homes for birds.

Think Like a Scientist

Now, think like a scientist! Make one half of a sloped tray bare sand. Cover the other half with grass or moss. Pour the same muddy water down each side. Compare the water at the bottom. Don't drink it, but which is clearer?

Outro

Wetlands like marshes and swamps slow water through thick plants, while plants and soil trap mud and absorb nutrients and microbes break down pollution. The water leaves cleaner, and wetlands also soak up floods and shelter wildlife. Science is amazing! The world is full of surprises. Keep asking big questions, and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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