How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another?

Animals evolved separately on each continent.
Land bridges existed between the continents.
Animals swam across the ocean to new continents.
Continents were once one landmass and have drifted apart.

One nanometer is equal to how many meters?

A0.10 m aqueous solution of sodium sulfate is a better conductor of electricity than a 0.10 m aqueous solution of sodium chloride. which of the following best explains this observation? (a) sodium sulfate is more soluble in water than sodium chloride. (b) sodium sulfate has a higher molar mass than sodium chloride. (c) to prepare a given volume of 0.10 m solution, the mass of sodium sulfate needed is more than twice the mass of sodium chloride needed. (d) more moles of ions are present in a given volume of 0.10 m sodium sulfate than in the same volume of 0.10 m sodium chloride. (e) the degree of dissociation of sodium sulfate in solution is significantly greater than that of sodium chloride.

When scientists are ready to publish the results of their experimentation, why is it important for them to include a description of the procedures they used?