Matilda Brown

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The short answer is that leaves fall off trees when they aren’t doing their job any more. Emily Nunell/The Conversation CC-NY-BD

Curious Kids: why do leaves fall off trees?

Matilda Brown, University of Tasmania

Leaves fall off trees when they aren’t doing their job any more. If there isn’t enough water, the leaf can be damaged and stop working.
Different kinds of plants make different kinds of seeds. Some seeds grow into trees and other seeds grow into other kinds of plants. www.shutterstock.com

Curious Kids: Where did trees come from?

Greg Jordan, University of Tasmania and Matilda Brown, University of Tasmania

Trees evolved many times around the world.

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