1.) Can you describe the right way to hold a microscope? 2.) The boy is wondering on what to use to clean the microscope lenses. The lens tissue has been treated to prevent scratching. What should one use to clean? Why?
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answer; i believe the answer is (polygenic inheritance;

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

hello, ballerbaby1265. i would say that the child has had a concussion due to the fall and their symptoms. 60 beats per minute is normal in a child that is sleeping, but not while awake. two of the main symptoms of a concussion after are both sleepiness and being tired. i hope i have a great night.