When organisms in the ecosphere die, they are broken down by bacteria. Nutrients, such as nitrates, are released back into the ecosphere. Why is this important for the
survival of the other organisms in the ecosphere?

Explanation they written :

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.