It should be the last one, but if you can pick more than one answer then I would do the first and last one but I’m confident that it would be the last one either way :) hopefully this is helpful
        
             
        
        
        
Answer:
A. It Shows that organisms have changed over time.
Explanation:
 
        
                    
             
        
        
        
Matter that is not used by consumers in the food chain become "detritus". Detritus, meaning debris or waste, are materials that are missed or uneaten by consumers. Because they do not participate in higher trophic levels, these materials are left to decompose. Detritus is often considered the "missing mass" when measuring the total mass in the food chain.
        
                    
             
        
        
        
Answer:
Simple clothing, living in farming communities and using horse- driven vehicles best describes Amish culture. 
Explanation:
The simple clothing concept of Amish culture shows their modesty. The women wear long and simple dresses that goes all the way down to their knees and they also cover their hair. They believe wearing simple dress is a way of keeping their hearts pure. 
Amish people use buggy or horse driven vehicles and not cars because they believe that the innovation in technology has the potential to bring assimilation into the surrounding society.
They mostly live in farming communities which are located in Indiana, Pennsylvania, Ohio, Central American and even in Canada. 
 
        
             
        
        
        
Answer:
increase anxiety; decreased vulnerability to overreact to stress
Explanation:
Serotonin (5-HT) is a natural neurotransmitter that carries signals between nerve cells (neurons) throughout the body. This neurotransmitter (serotonin) is responsible for regulating many biological functions (e.g., mood, digestion, sleep, etc). Moreover, it has been shown that there is an association between low cerebrospinal fluid 5-hydroxyindole-acetic acid (5-HIAA, the principal serotonin metabolite in the brain) levels and the risk of developing depression or destructive behaviors. In addition, serotonin concentration can also be elevated in situations of anxiety and/or stress. Antidepressants such as Prozac, Zoloft and Paxil act as serotonin uptake inhibitors that increase serotonin concentration at the synaptic site. Like other drugs, these antidepressants may lead to increase anxiety and decrease the vulnerability to react to stress by downregulating sensitivity to serotonin released during natural stress situations.