Answer and Explanation:
The affinity of hemoglobin for Oxygen is controlled when the ligands  ,
 ,  and BPG binded.
 and BPG binded.
The binding of every ligand moves the saturation curve of  Oxygen towards right—that is, the oxygen affinity of hemoglobin is decreased within the sight of ligand.  
(a) A pH drop will expand the oxygen affinity to myoglobin and decline the oxygen affinity for hemoglobin. This implies less oxygen will be taken by the lungs and more will be off stacked at the tissues diminishes the affinity.
(b) An abatement in the partial pressure of  will expand affinity of oxygen to hemoglobin and diminishes the affinity of oxygen for myoglobin expands the affinity.
 will expand affinity of oxygen to hemoglobin and diminishes the affinity of oxygen for myoglobin expands the affinity.
(c) An expansion in BPG levels diminishes the affinity of oxygen for hemoglobin and expands oxygen's affinity for myoglobin  diminishes the affinity.  
(d) As CO ties to a couple of subunits of a hemoglobin tetramer, the affinity for oxygen is expanded generously in the rest of the subunits. Subsequently, a hemoglobin tetramer with two bound CO particles can productively tie oxygen in the lungs—yet it discharges almost no of it in the tissues.
 
        
             
        
        
        
Once an RNA has been produced, by transcription and processing the information present in its nucleotide sequence is used to synthesize a protein. 
        
             
        
        
        
Answer:
survive in their environment
Explanation:
According to Darwin's theory of evolution, natural selection is the main mechanism. Darwin explains that organisms that have heritable traits that help them survive and reproduce, will be favorable by natural selection. Those favorable traits will enable organism to better adapt to their environment and to pass more genes on to the next generation (offspring).
Organisms adapt to their environment by changing their behavior, structural traits or physiology as a response to environmental change, so that they become well suited to it.
 
        
             
        
        
        
Explanation:
Positive feedback loops induce/amplify change whereas negative feedback loops reduce change
 
        
                    
             
        
        
        
The correct answer is letter (<span>C) The polar air mass moves south to replace the rising maritime tropical air mass.</span> These air masses are bringing cold air to warmer areas most especially during the winter and cool. These air masses are stable and usually does not form much cloud. While the Continental Polar air move down south, across the warmer land, the lower part of the air mass is modified and thus few clouds are formed.