The electromagnetic spectrum is the portion of energy that reaches the Earth from the Sun. However, the human eye can still only detect a portion of that spectrum because of the of the visible light waves.

During mitosis, chromosomes are moved and separated through the use of spindles composed of  microtubule  structures.

In the correct the steps in washing hands,    when applying soap and scrubbing, you must lather your hands by rubbing them together with the soap. lather between your fingers, under your nails and the  backs of your hands, . and scrub your hands for at least 20 seconds. you may use “happy birthday” song from beginning to end twice for your timer.