What is a force that resist the motion of one force over another

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.