What is the organizational structure of this text? Some sources of energy, such as gas and oil, can be harmful to the health of the Earth. Burning gas and oil add harmful pollution to the air. Gas and oil are also limited resources, and we are using up the small amount that is left on the planet. This is why people should use wind or solar power that reduce the pollution on Earth and are renewable resources.

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problem and solution

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cause and effect

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description

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chronological