Smoke filling up a room is indeed an example of diffusion. Diffusion occurs when two or more sets of molecules intermingle and spread out. In this case, it would be the smoke molecules interacting and spreading out among the air molecules.
Observation is a very important part of science. It lets us see the results of an experiment, even if they are not the results we expect. It lets us see unexpected things around us that might stimulate our curiosity, leading to new experiments. Even more important than observation is accurate observation. Often, our eyes and our brains play tricks on us, letting us see what we expect to see, instead of what is actually there.
Have they not prepared for the examination.
Answer:
a
Explanation:
copying work from is the definition of copying
