If the sympathetic nervous system is in a state of constant of anticipation, being conscious manages to maintain the correct balance between the sympathetic and parasympathetic systems by growing the latter's operation. That provides a sense of relaxation and peace.
When arousing the sympathetic, it brings us on high alert, also named the fight-or-flight reaction. For our existence, the sympathetic nervous system is important in helping us to react appropriately when there is a danger. These two mechanisms work with coordination as the other becomes less active as one will respond more active. Yet it can get them out of control.
I believe the answer is D. the green revolution was instrumental in the increase of the world's food supply, but I may be wrong because it does have some negatives.
Answer:
The blood pressure is increased to pump more blood to distribute more oxygen to the muscles
Explanation:
When we do activities that demand heavy exercise like running, our body needs more oxygen to carry out property the exercise. Oxygen is transported to muscles by the circulatory system (principally blood), our heart starts to pump faster the blood ( increase the blood pressure) to distribute the oxygen between muscles, consequently, we start to breathe faster to increase the oxygen intake.
Most of it follows its cycle, going back to the atmosphere.
The image below, shows you how the nitrogen cycle is.
Hope it helped,
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