Answer: Muscular strength and endurance are two important parts of your body's ability to move, lift things and do day-to-day activities. Muscular strength is the amount of force you can put out or the amount of weight you can lift.
 
        
             
        
        
        
Family environment, ability or disability, the attitude of peers, social media, and cultural background
        
             
        
        
        
My best guess would be A
Please put me as a Brainlier
        
                    
             
        
        
        
Answer: Natural Errors
Explanation: Mutagens can erase parts of DNA that then replicate, but is not a mistake made in copying DNA so that's not it. UV Radiation distorts DNA, but is not necessarily a mistake made in copying it. Natural Errors are mutations made by cells when they copy base pairs and ineffectively or for some other reason mutate/do not create  the correct DNA, and the failure of cells to correct this is a mutation. This is also known as an error in DNA replication
 
        
             
        
        
        
Cardiovascular System
In addition, the blood vessels that direct blood to the large muscles and the heart dilate, thereby increasing the amount of blood pumped to these parts of the body and elevating blood pressure. ... This long-term ongoing stress can increase the risk for hypertension, heart attack or stroke.