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Agata [3.3K]
3 years ago
8

3. When (what year) were stone tools first used?

Biology
1 answer:
Dima020 [189]3 years ago
4 0
Stone tools we’re first used around 3,300 BCE
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Answer:

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Explanation:

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A circular opening cut into the skull to reveal brain tissue and decrease intracranial pressure is called a
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Purple sulfur bacteria and filamentous sulfur-oxidizers both A. accumulate sulfur as intracellular granules.B. fix nitrogen.C. p
aksik [14]

Answer:

Option A, accumulate sulfur as intracellular granules.

Explanation:

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3 0
3 years ago
Scientific explanations are accepted when
Stolb23 [73]

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