The atmosphere is a mixture because it contain many types of gases , liquids and solids.
 
        
                    
             
        
        
        
The appropriate response is serotonin. LSD is a medication that modifies the client's psyche. This implies it follows up on your mind. This type of medication changes your state of mind, conduct, and the way you identify with your general surroundings. LSD influences the activity of a cerebrum substance called serotonin. Serotonin helps control conduct, inclination, the faculties, and considering
        
             
        
        
        
 Answer:
Diseases is a particular abnormal condition that a negetavile affects the parts of the body system
The different ways we can get a disease are:
. Contaminated air
. Dirty water
.direct or indirect contact with another person who have diseases. 
A plant or animal organism that lives In or on another takes the nourishment from that other organism is known as parasite. 
Explanation:
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There were no options but I would assume something around the lines of..
It allows for procreation