observe the cartoon on the next page. Identify each simple machine represented in the machine. your choices will be:lever, inclined plane, pulley, wedge, screw,,wheel and axel, and pendulum.(not really a simple machine, but will be ok in this worksheet)

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.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.