Why do you begin with veiwing with the lowest power objective lens

So the lens wont break

Explanation: You always start at the lowest power objective lens because if its on the highest one and you try to move the lens closer, it may break the lens.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.