Discuss the nature of the Miller-Urey experiments. What are the results of these experiments?

What will be an ideal response?


The Miller-Urey experiments involved passing an electrical charge ("lightning") through a "primordial soup" of chemicals believed to be similar to those which existed on early Earth. The result was the same simple amino acids found today in all living things on Earth.

Physics & Space Science

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Which of the following statements pertaining to a vacuum flask (thermos) is NOT correct?

A. Silvering reduces radiation loss B. Vacuum reduces conduction loss C. Vacuum reduces convection loss D. Vacuum reduces radiation loss E. Glass walls reduce conduction loss

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The spectral lines are more distinct when viewed in a mercury vapor lamp under

A) high pressure. B) low pressure. C) same for each

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Your ears "pop" when you ascend to higher altitudes because

A) air pressure is greater at higher altitudes. B) air temperature is lower at higher altitudes. C) air pressure is lower at higher altitudes. D) air is dryer at higher altitudes.

Physics & Space Science

A ball rolls off the edge of a table at the same time another ball drops vertically from the same table. The ball to hit the floor first is the

A) rolling ball. B) dropped ball. C) both hit at the same time

Physics & Space Science