A. Is the correct answer :)
        
             
        
        
        
<em><u>Question</u></em><u>:</u> The process by which electrons from the quinone pool are forced against the thermodynamic gradient to reduce nad+ to nadh is called reverse
<em><u>Answer:</u></em> Reverse Electron Flow
<h3>^^Hope this helps and have a wonderful day^^</h3>
 
        
             
        
        
        
The left ventricle is responsible for pumping oxygenated blood throughout the entire body, which requires a lot of work and pressure, hence why it is super thick.
        
             
        
        
        
The question is asking the determine the role that the United States do in the ecosystem base on the passage and situation in the question that you have state, base on my research, I would say that its role is a Dominant. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification 
        
             
        
        
        
Answer:
Ecology is the study of organisms and how they interact with the environment around them. ... Changes in ecosystems can result from many different factors including diseases among the organisms living in the area, increases in temperature, and increased human activities.
Explanation: