Calcium channel blocker
These medications lower blood pressure and treat other conditions such as chest pain and an irregular heartbeat.
<h3>What are Calcium channel blocker ?</h3>
Calcium channel blockers are medications used to lower blood pressure. They work by preventing calcium from entering the cells of the heart and arteries. 
- Calcium causes the heart and arteries to squeeze (contract) more strongly. By blocking calcium, calcium channel blockers allow blood vessels to relax and open.
- The medications may also be prescribed to relieve chest pain (angina) and control an irregular heartbeat.
- Calcium channel blockers are also called calcium antagonists.
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Dietary,health,stress level,blood pressure,smoking 
Permanent damage
        
             
        
        
        
Answer:
Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O 
Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O
Explanation:
Dehydration
In chemistry, a dehydration reaction is one that involves the loss of water. In organic synthesis, where an acid is often used as a catalyst, there are numerous examples of dehydration reactions: Conversion of alcohols to ethers: 2 R-OH → R-O-R + H2O Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O Conversion of amides to nitriles: RCONH2 → R-CN + H2O
Sources: 
Klein Organic Chemistry. 2th edition
Mcmurry's Organic Chemistry. 9th edition.
 
        
             
        
        
        
Answer:
Lower density of other rival geographical populations and technological advancements.
Explanation: