About 70% of our planet is covered by oceans. Compared to the depth of the solid portion of the earth, the water on earth forms a A. Much thinner layer B. Much thicker layer C. Layer twice as deep D. Layer with a similar depth.

The answer is much thinner layer.

Explanation:

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.