I disagree because although recycling is good, Earth firstly is not a closed system and new matter enters the environment all the time, such as comets.
The right answer is the kidney will regulate the blood pressure by the renin angiotensin aldosterone system.
The kidney plays a role of selective filtering of the blood. It allows the blood to get rid of its waste. But it also removes water and mineral salts that are in excess.
But the kidney also plays a dynamic role in increasing the pressure, by means of a system called "renin-angiotensin system" which is one of the most powerful natural hypertensives available to the body. Thanks to an enzyme he makes, renin, the kidney will turn a normal blood protein, angiotensinogen, into angiotensin, which causes the vessels in the body to contract and therefore increase blood pressure. This effect is manifested permanently in a disease which is the stenosis of the renal artery, that is to say the permanent narrowing of the caliber of this artery. The kidney, believing that the blood pressure decreases because of this narrowing, will permanently produce renin, which will cause an immediate increase in blood pressure.
Answer:
C. The nations of the world have finally come to some agreement on why and ... Ecosystems are open systems through which energy flows and materials are cycled ... In detrital food webs it flows mainly from plants through decomposers and detritivores ... In the atmospheric cycles, elements can move in the gaseous phase
Explanation:
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<span>The impulsive mechanism described by Freud is known as the Id. According Freud, the id is the unconscious part of the human mind that wanted to be satisfaction that holds hidden instincts and desire for action. He said that for some people this is not suppressed and are controlled by their Id. This shows their negative behavior without any sense of undertanding right decisions. </span>
Answer:
Father of Biology - Aristotle