What is atomic mass unit?

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

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?

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?