In human blood, there is a compound inside the RBCs called haemoglobin which ensures that the muscle will receive enough oxygen during exercise. 
<h3><u>Explanation:</u></h3>
In human blood, the red blood corpuscles contain the haemoglobin. Haemoglobin is a iron chelated compound containing porphyrin ring and a globin tail which can establish co-ordinate covalent bond with both oxygen and carbon dioxide. The bonding element depends on the concentration of these two gases. In lungs, where the oxygen concentration is more than carbon dioxide, the haemoglobin bonds with oxygen and brings it to the tissues where carbon dioxide concentration is more. This makes the haemoglobin to release oxygen and bond with carbon dioxide which is brought back to lungs. This is the process by which each and every tissue including the muscles recieve oxygen.
In muscles there is Myoglobin which is another iron-porphyrin compound which has several times more affinity for oxygen than haemoglobin. This helps to extract more oxygen from haemoglobin in muscles. 
 
        
             
        
        
        
It depends on what the big fish and the small fish eat
        
                    
             
        
        
        
The correct answer is A) Describes water’s attraction to other materials. Hope this helps.
        
                    
             
        
        
        
<span>Non-renewable energy sources to run cultivates through water system, transportation, arrangement, gather, preparation pesticides
Energy subsidy is the measure of vitality and energy that is important to make the nourishment that we eat so on the off chance that we eat something that has 2 calorie however requires 6 calories to influence we to have the appropriate energy of 6</span>