The correct answer is: B) "All roads lead to Rome"
Citric acid cycle also called tricarboxylic acid (TCA) cycle and Krebs cycle is a central process in cellular respiration. Citric acid cycle that connects carbohydrate, fat, and protein metabolism so “all the roads” from the different metabolic pathways come to this cycle.
Acetyl-CoA which is produced through the oxidation of pyruvate (pyruvate is a product of glycolysis) enters the cycle which then produces reduced electron carriers NADH, FAD2 and energy molecule ATP. These electron carriers will then pass their electrons into the electron transport chain and, through the process of oxidative phosphorylation, will produce more ATP.
 
        
             
        
        
        
A robin flying south for the winter 
 
        
             
        
        
        
The answer is: D four haploid gametes
        
             
        
        
        
Answer:Biological Surplus is the amount of animals in a given population that are "above" the carrying capacity.
Explanation:
 
        
             
        
        
        
Answer:
Sunlight
Explanation:
Sunlight is not provided 24 hours a day so during nightfall solar panels will not have the ability to collect energy.