How are gases different from liquids and solids , and what are four examples of properties of gases

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

Mark creates a graphic organizer to review his notes aboutelectrical force.which labels belong in the regions marked x and y?

How many astronauts have walked on the moon?