1.	The correct answer is pH.
The activity of the enzymes might be affected by environmental changes such as change in pH. Each enzyme has the point when it is the most active and this value is known as the optimum pH. Extremely high or low pH values can lead to loss of enzyme activity and stability.
Phosphofructokinase is sensitive to acidity, meaning that it is inhibited by low pH levels.
2.	The correct answer is temperature.
Enzyme is sensitive to the environmental conditions such as temperature changes.
Temperature is a factor that usually increases the rate of enzyme-catalyzed reactions by increasing the activity of enzymes. But, after reaching the optimum temperature, reaction rate abruptly declines. This happens because enzymes are deactivated or denatured at a certain temperature (above 40° C).
 
        
             
        
        
        
A cell or Atom is something that can process life or can processed into an object. (The atom is in objects and life Such as animals and humans as a cells in just humans and animals
        
                    
             
        
        
        
Answer:
breed the red hamsters with blue eyes in hopes of getting their babies and sell them.... I have no idea what else you could do lol. 
 
        
                    
             
        
        
        
Answer:
The correct answer is C production of FAD to FADH2 by the citric acid cycle represent the energetic capacity to synthesize about 1.5 ATP.
Explanation:
Citric acid cycle is one of most important stage of cellular respiration.Citric acid cycle or TCA  cycle composed of various enzyme catalyzed biochemical reaction.
  various reduced coenzymes are produced during TCA cycle such as NADH,FADH2.FADH2 is formed from FAD during the conversion of succinate to fumarate.
   The FADH2 then enter electron transport chain to oxidize itself into FAD along with the generation of 1.5 ATP.
 
        
             
        
        
        
Una pieza de roca áspera. I'm only guessing <span />