An Improved Method of Radiometric Dating,which Filtered Out Contaminants,showed That

question 11

Multiple Choice

An improved method of radiometric dating,which filtered out contaminants,showed that most Neanderthal bones in Europe are older than suggested by earlier dating.This new dating suggests that Neanderthals' time on the planet did not overlap with modern humans.Radiocarbon dating depends on measuring the radioactive isotopes of carbon-14.
Which of the following statements supports the null hypothesis that modern humans and Neanderthals did not occupy the same sites at the same time?

• A)The Neanderthal fossils were older than originally dated because very little carbon-14 remained in filtered specimens.
• B)Small amounts of contaminating carbon-14 can make a sample seem much older.
• C)The amount of carbon in an organism's body increases after death.
• D)Re-dating Neanderthal sites across Europe shows evidence for extensive interbreeding between Neanderthals and modern humans.

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Definitions:

Social Facilitation

The tendency for people to perform differently when in the presence of others than when alone, typically better on simple or well-practiced tasks and worse on complex or new ones.

Well-Learned Tasks

Skills or activities that have been practiced to a point of high proficiency, often performed automatically or with little conscious thought.

Individual Performance

Refers to the execution of tasks and duties by a single person in any given context, including work, school, or sports.

Social Facilitation

The tendency for individuals to perform differently when in the presence of others than when alone, typically improving on simple tasks.