Answer:
Procedure.
Explanation:
A procedure is a process by which the hypothesis is tested under controlled [variables].
Could be experiment, could be experimental design. This question is a little confusing, but that's okay. I tried my best.
The major concern of scientists who left Nazi Germany for the states before ww2 was that a new Nazi would heavily persecute the Jews ,many of whom held positions in the realm of science
Answer:
According to Boundless Chemistry, the nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). Atoms are made up of protons and neutrons located within the nucleus, including electrons that are in orbitals that surround the nucleus.
Hope this helps! If it did then please mark brainliest!