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Observing Change

Observing Change. Growing and Molting. Have you ever outgrown something?.

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Observing Change

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  1. Observing Change Growing and Molting

  2. Have you ever outgrown something?

  3. Just like babies, caterpillars eat a large amount of food and grow rapidly. But their skin is actually a rigid external skeleton called an exoskeleton.As they eat and grow their soft bodies outgrow their exoskeleton and have to grow a new one!

  4. Molting is when an insects sheds their exoskeleton and grow a new one. • The exoskeleton near the head splits just like clothing that doesn’t fit and it begins to fall off.

  5. How can you tell that the Butterfly has molted? • It is like they leave their clothes on the floor! • You will see a discarded black skin and a rounded head capsule. • You may not see the skin, because the caterpillar sometimes eats the exoskeleton.

  6. You will also noticed the spinning left by the caterpillar after a molt!

  7. After the molt, the caterpillar’s bristles and exoskeleton are extremely pale.

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