When Is The Material Harmful
When is the material harmful
Answer:
The materials like coals or fossil fuels will be harmful when when they are burned.
Explanation:
When they are burned, they will waste carbon and make the air polluted.
When is the material harmful
Answer:
The materials like coals or fossil fuels will be harmful when when they are burned.
Explanation:
When they are burned, they will waste carbon and make the air polluted.
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