Observation, experimentation, and mathematics, in combination, produce reliable results. This statement describes a development of thought during which period?

- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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could you give me the options ?

the united states began searching for a way to reduce oil

-agarvated

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse