Hurricane Katrina was a density-dependent factor because this disaster affected everyone in the area. It did not selectively have an effect like
        
             
        
        
        
Answer:
a fuel for cellular respiration and a starting material for making other organic molecules.
Explanation:
Plants have the ability to produce sugars by the process of photosynthesis. Plants can convert the inorganic CO2 from the air into the organic nutrients such as sugars. Plants store sugars so that they can serve as a source of ATP for the cells as and when required. The sugars enter the process of cellular respiration and are oxidized into CO2 and H2O. In addition, the energy of chemical bonds of the sugars is used to form ATP molecules.
Plants also use sugars to synthesize other organic molecules. For example, several intermediates of Kreb's cycle can serve as precursors for the synthesis of amino acids. Amino acids are joined together to form different proteins.
 
        
             
        
        
        
By the excretory system through the large intestine
        
                    
             
        
        
        
Answer:
organ
Explanation:
An organ  is a group of tissues that work together to carry out a common function?.
 
        
                    
             
        
        
        
The statement that is true about a buffer is that it reduces the amount of H+ in an acidic solution (option B). 
<h3>What is a buffer solution?</h3>
Buffer is a solution that is used to stabilize the pH (excess acidity or alkalinity) of a liquid. 
Buffers operate by neutralizing any added acid (H+ ions) or base (OH- ions) to maintain the moderate pH, making them a weaker acid or base. 
Therefore, it can be said that the statement that is true about a buffer is that it reduces the amount of H+ in an acidic solution. 
Learn more about buffer at: brainly.com/question/1423164
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