Answer: They move during that time because of the fact that the earth move around one its axis around the sun.
Explanation:
Explore a wide variety of cells, from bacteria to human neurons, using a compound light microscope. Select a sample to study, then focus on the sample using the coarse and fine focus controls of the microscope. Compare the structures found in different cells, then perform tests to see if the sample is alive.
Because to demolish you need less labor, just a simple machine meanwhile to build something you need to take time to plan it out, design, etc.