What Is Muscle?
What Is Muscle? Muscle is the body tissue which, because it has the power of contraction, enables the higher animals to move their bodies. Muscles are divided into two...
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What Is a Parachute and How Does It Work?
What Is a Parachute and How Does It Work? A parachute is a device used to slow down an object that is falling towards the ground. There are two forces acting on the...
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When Do Bones Break?
When Do Bones Break? Bones break under varying degrees of pressure according to age, health and other circumstances. They are made of hard, strong connective tissue and...
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What’s the Difference Between Disc and Drum Brakes?
What’s the Difference Between Disc and Drum Brakes? A car in motion has a lot of kinetic energy, which is energy of motion. To stop a car, the brakes have to get...
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Do Kangaroos Box?
Do Kangaroos Box? Kangaroos do often fight with one another, but they don’t box the way a prizefighter does, by throwing punches. Kangaroos fight by biting and...
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