Researchers from the United States and Germany Have Argued That

question 37

Multiple Choice

Researchers from the United States and Germany have argued that the common ancestor of the Neandertal and modern humans existed about __________ years ago.

• A) 600,000
• B) 250,000
• C) 400,000
• D) 100,000

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Definitions:

Silver Acetate

A chemical compound with the formula AgC2H3O2, used in plating and as a photographic agent.

NaCl

Sodium chloride, commonly known as table salt, an ionic compound consisting of sodium and chloride ions.

AgCl

Silver chloride, a white crystalline solid that is photosensitive and less soluble in water.

Spectator Ions

Ions that are present in a chemical reaction but do not participate in it, remaining unchanged throughout the reaction.