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Post date	Users	Rates	Content
2019-10-02	bishoy	83	Check this topic
2019-10-02	bishoy	66	Check this topic
2019-10-02	bishoy	66	Check this topic
2019-10-02	bishoy		Check this topic

Topic title: Using points and examples from the talk, explain the two possible ways early humans discovered how to use fire to release copper from solid rock.

Topic category: Q6