Which statement summarizes the difference between mass and weight?
Mass is the downward pull on an object due to gravity, and weight is the amount of matter in an object.
Mass is the amount of matter in an object, and weight is the downward pull on an object due to gravity.
Mass is measured in newtons, and weight is measured in pounds.
O Mass is measured in pounds, and weight is measured in newtons.

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.

not only is it colder, it also becomes darker, less salty, and more dense.