This movie requires Flash Player 8. Download Flash Player 8

Issue Features
In This Issue
Discovery Magazine 11/1/1992

Why Do Leaves Fall?

Another name for autumn is fall, because it is the season when leaves fall from the trees. But not all trees lose their leaves at this time.

We call some trees "evergreens" because they stay green all through the year. Some leaves on an evergreen may last for fifteen years! Eventually, the old leaves will drop off, and new ones will grow in their place. Pines and firs are examples of evergreen trees. They have needle-like leaves which are covered with a thick layer of wax. These special leaves help the tree live when the weather becomes cold and dry.

Other trees (like oaks and maples) are "deciduous" (dee-SIJ-oo-us). This means that they shed all, or nearly all, their leaves each year. This usually happens in the autumn when the days get cooler and shorter. After the tree stores the food from the leaves, the leaf stem begins to change. A special chemical called abscisic (ab-SIS-ik) acid is formed. This weakens the layer of cells where the leaf is attached. Then, when the wind blows, the dead leaf is pulled away from the tree. It is replaced by a leaf bud that will grow into a fresh new leaf in spring. Bacteria and fungi break down the dead leaves that fall to the ground. This makes more food for the tree.

Evergreens and deciduous trees show many designs of God. He created them so that they could live in many different parts of the world.

Copyright © 1992 Apologetics Press, Inc. All rights reserved.

*Please keep in mind that Discovery articles are written for 3rd-6th graders.

This document may be copied, on the condition that it will not be republished in print unless otherwise stated below, and will not be used for any commercial purpose, as long as the following stipulations are observed: (1) Apologetics Press must be designated as the original publisher; (2) the specific Apologetics Press Web site URL must be noted; (3) any references, footnotes, or endnotes that accompany the article must be included with any written reproduction of the article; (4) textual alterations of any kind are strictly forbidden; (5) Some illustrations (e.g., photographs, charts, graphics, etc.) are not the intellectual property of Apologetics Press and as such cannot be reproduced from our site without consent from the person or organization that maintains those intellectual rights; (6) serialization of written material (e.g., running an article in several parts) is permitted, as long as the whole of the material is made available, without editing, in a reasonable length of time; (7) articles, in whole or in part, may not be offered for sale or included in items offered for sale; and (8) articles may be reproduced in electronic form for posting on Web sites pending they are not edited or altered from their original written content and that credit is given to Apologetics Press, including the web location from which the articles were taken. Further, documents may not be copied without source statements (title, author, journal title), and the address of the publisher and owner of rights, as listed below.

For catalog, samples, or further information, contact:

Apologetics Press
230 Landmark Drive
Montgomery, Alabama 36117
Phone (334) 272-8558

Web Store

Digger Doug's Underground (Episodes 19 and 20)

Digger Doug’s Underground is a children’s program based on the characters from our popular children’s publication Discovery Magazine. For years, Digger Doug has been working with his good friends at Apologetics Press answering questions from...

Featured Audio


Click the following link to visit our Multimedia section.

Featured Audio