3. How is movement brought about in the following animals? a. Snail b. snake
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Snail=The under surface of the muscular foot is lubricated with mucus, which helps in movement and also reduces the risk of injury from sharp objects. Waves of muscular contractions along this surface help a snail move.
snake= Snakes move by crawling on their bellies in a wave-like pattern with the help of scales. Their flexible backbones push the body forward by pressing against the ground.
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