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To learn science is not so easy task. The complete Hands on Science-20 Themes book covers important topics from Life Science, Earth Science and Physical Science. The topics include: - Aquarium - Sun and Shadows - Cold and Heat - Bubbles - Sink and Float - Water - Plants - Life Cycles - Light - Chemistry - Sound - Nutrition - Air - My Five Senses - Animal Behavior - Magnets - Color - Rocks and Soil - Weather - Microorganisms.