Here is an important list of "nevers" to follow when using a compound light microscope in the lab. 1. Never swing the microscope
. 2. Never touch the lenses with your fingers. 3. Never carry the microscope with one hand. 4. Never cover the microscope when not in use. Which "never" should be replaced with an "always"? A) Never swing the microscope. B) Never carry the microscope with one hand. C) Never touch the lenses with your fingers. D) Never cover the microscope when not in use.
when you are finished using a light microscope or any microscope in general you always need to put the cover back on it. Mostly, to protect it from any harmful bacteria, light etc. and to keep it clean and, from collecting dust.
The concept of reproductive isolation relates more toward genetic similarities to distinguish between species. The barriers prevent closely related species living in the same geographical area from interbreeding. They help to keep each species distinct from the others.