Which piece of evidence did Alfred Wegener's original theory of continental drift have access to?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

How many atoms are there in 5.70 mol of mg