April holds a Masters in Educational Technology and a B.S. in Elementary Education from Texas State University. She has experience teaching second grade, and as a campus instructional technologist, creating and implementing curriculum for elementary coursework. April is versed in teaching trends and approaches, and holds multiple certifications.
Koala Adaptations: Lesson for Kids
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ShowKoalas are cute and pudgy, they hang out in trees, and just like newborn human babies, they sleep for about 18-20 hours a day. If you threaten them, they will take action and viciously fight back. These tree huggers only live in Australia and a few islands around it.
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If you have ever climbed in a tree, you know how difficult it can be. Koalas do not face these difficulties due to some physical adaptations, or characteristics that make it easier for them to survive in their environment. They have very strong thigh muscles to help them climb up or from branch to branch. They also have opposing digits, or fingers, that allow them to grab branches easily. Like humans, they have five digits, including thumbs, for better grabbing. Those digits are rough with sharp claws on them to help them get traction and not slip when climbing.
Not only do they climb around in trees most of the time, koalas also sit on the branches day and night. Sounds painful, doesn't it? Not for these guys. They have extra thick fur on their bottoms for a comfortable seat.
Koalas also don't need coats or umbrellas to keep warm and dry. They have thick woolly fur that protects them from extreme temperatures and acts as a rain repellent. This fur also keeps them safe because it's a speckled color that camouflages them in the trees.
If you think the food you eat can get boring, imagine only eating one thing every day of your life. Koalas live this way and love it! They eat eucalyptus leaves from trees every single day and that's it - they don't even drink water. The water in the leaves is enough for their bodies. But it gets even crazier: eucalyptus leaves are actually poisonous. However, koalas have special bacteria in their intestines that break down the poisonous oil in the leaves so it doesn't hurt them. The bacteria also helps break down all of the fiber in the leaves.
The koala's giant nose helps them smell the best leaves to eat and smell other koalas' markings on the trees. They know whose house they're climbing on, and when to move on.
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Koalas live in social groups with other koalas, but each has their own tree, kind of like a neighborhood with lots of houses. They scratch their own trees so that everyone knows who lives there. Males also leave a sticky brown substance on their trees to mark them.
Koalas have a very special adaptation just for taking care of their babies. They are marsupials, which means the mamas have pouches on their belly areas that keep the babies safe for a period of time. Mama koalas are very nurturing and take care of their helpless babies for about a year and a half. They are born with no hair, are blind and deaf, and are only about 2 centimeters long. That's about the size of an adult pinkie finger. After they're born, the baby koalas climb into their mothers' pouches and live there, drinking milk for about 6 months. After this time they come out, and their mothers teach them to survive outside the pouch. This takes about a year.
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Let's review what we've learned. Koalas have many adaptations, or characteristics that make it easier for them to survive in their environment, which in the case of koalas is Australia and a few of Australia's surrounding islands. These are marsupials, or warm-blooded creatures that use pouches to warm their young, and they live in trees, eat eucalyptus leaves, don't need to drink water, and are great climbers because their opposing digits, or fingers, that help them grab branches with ease. They take great care of their babies and are just cute as can be!
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