What is the earth's energy budget?

a. the balance between the amount of energy coming into earth from the sun and going back out into space.
b. the total energy available in the universe minus earth's energy use.
c. the total energy output by the sun minus all the solar system planets' energy use.
d. the total energy output by the sun plus the energy reflected by earth's atmosphere back into space.

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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.