Thursday, May 15, 2008

Why do leaves fall in Autumn?

We watched Suzy's World about Autumn.

We found out...
-the leaves photosynthesise to make food for the tree.
-the tree blocks the tubes to the leaves in Autumn and puts a cap in place. The leaves fall off.
-chlorophyll makes the leaves green
-the chlorophyll disappears in Autumn and the brown, yellow, red and orange colours show through.

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