The Answer is A Birds because birds use eggs not sex
        
                    
             
        
        
        
Mitochondria produce ATP through process of cellular respiration—specifically, aerobic respiration, which requires oxygen. The citric acid cycle, or Krebs cycle, takes place in the mitochondria. This cycle involves the oxidation of pyruvate, which comes from glucose, to form the molecule acetyl-CoA. Acetyl-CoA is in turn oxidized and ATP is produced.
        
             
        
        
        
Answer:
Serotonin is an important chemical and neurotransmitter in the human body. it is believed to help regulate mood and social behavior, appetite and digestion, sleep, and memory
 
        
             
        
        
        
Answer: Amylose
Explanation: Which complex carbohydrate contains only a-1,4-glycosidic linkages? Amylose (Amylose is formed from a-1,4-glycosidic linkages of glucose.)
 
        
             
        
        
        
Answer:
the world will end on few hours............