Question
How do things work?
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Answer
Things work because of how different parts or materials interact with each other. For example, in a clock, the gears move to show the time, and in a plant, the roots absorb water to help it grow, glowing of an electric bulb. Our bodies work in a similar way, with each organ having a special role to keep us healthy. Science helps us understand how these parts work together to make things function properly.
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(iii) If an indicator changes colour with a base, it does not change colour with an acid.
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