How many moles of silver atoms are in 1.60 x 10^27 atoms of silver? Your answer should be in scientific notation and rounded to the hundredth place (ex: 6.02 x 10^23).

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Why is the bottom layer of a trophic pyrimid the

In medium-sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form , but larger stars can produce elements as heavy as