It's purpose is to break down energy from carbohydrates and other organic molecules stored during photosynthesis
Salt concentration is the factor among the following factors given in the question that does not vary between a fast flowing river and a pond that receives no water input. The correct option among all the options that are given in the question is the second option. I hope the answer comes to your help.
The full form of ATP is ANANTAPUR Indian Railway Station ATP
Ambient Temperature Pressure Chemistry ATP
All Trace Particles Chemistry ATP
Adenosine Tri-phosphate. But there are alot more :)
The answer is: An air conditioner that turns on if the temperature gets too hot.
Even though they hurt you emotionally, Negative feedbacks serve their own important function. They keep your feet on the ground and prevent you from getting too arrogant.
This function is similar as a cooling air conditioner. Hot temperature in the comparison above represent your arrogance and the air conditioner represent the negative feedback.