Answer:
Variables are parameters that are monitored and controlled or affected by the feedback system
Explanation:
 
        
             
        
        
        
Living things contain four major types of carbon-based molecules. The organic molecules in living things fall into four major groups— carbohydrates, lipids, proteins, and nucleic acids. You may already be familiar with these types of molecules and their functions.
        
                    
             
        
        
        
The structures of chloroplast and mitochondria are similar. Both organelles consist of a smooth outer membrane, folded inner membrane (in chloroplasts called lamellae, in mitochondria called cristae), and fluid intracellular space (in chloroplast called stroma, in mitochondria called matrix). Only these structures allow those organelles to perform their function. The presence of folded inner membranes enables a formation of compartments inside the organelles. Differences in concentrations of hydrogen ions in those compartments are important for photosynthesis in chloroplasts and cellular respiration in mitochondria.
        
             
        
        
        
La reproducción de una planta es cuando una flor (o cualquier planta) tiene una semilla, o algo similar, y la semilla se reproduce en esa misma planta.