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How does this fossil differ from fossils that have preserved remains?

Which feature does this fossil have that preserved remains do not have?

It has carbon residue left by a decaying organism.

It was formed by tree sap that turned into amber.

It was preserved in frozen soil called permafrost.

It includes the preserved soft tissue of an organism.

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In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer

Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted