Answer:
A
Explanation:
Cardiovascular diseases involves the heart. 
Any of the above options with regards to blood (etc, white blood cells, red blood cells) are related to circulatory system, not affecting the function of the heart. 
Stem cells performing apoptosis to remove old cells is a myth. Stem cells can only differentiate to form cells of the same lineage, not causing other cells to undergo apoptosis. The only external factor that can cause cells to undergo apoptosis is a type lymphocyte in the immune system
 
        
             
        
        
        
Answer:
1. Most water we use goes to agriculture
Agriculture places significant pressure on the world's fresh water, accounting for nearly 70% of all water withdrawals. That number can rise to more than 90% in countries like Pakistan where farming is most intensive. Unless substantial efforts are made to reduce food waste and increase the water-use productivity of farming – to get more “crop per drop” – water demands in the agricultural sector are projected to increase in the coming years to keep up with population growth.
Explanation:hope you like this
 
        
             
        
        
        
Answer:
stethoscope is the instrument used to measure heart beat
 
        
                    
             
        
        
        
The medulla oblongata<span> helps regulate breathing, heart and blood vessel </span>function<span>, digestion, sneezing, and swallowing. </span>
        
                    
             
        
        
        
The diagnose for Zacahry would be Narcissistic Personality Disorder (NPD).  This type of disorder is characterized also with the following behaviors:  the person shows little care for others and is often envious when others are recognized for their achievements. Persons with this type of disorder are also prone to daydreaming and fantasizing about the success that <span>awaits him</span>