Chronic jetlag can cause cognitive deficits that can be permanent. This happens because the normal circadian rhythm of the body is disrupted. The endogenous system of circadian timing in the body adapts slowly. This disturbance  can impair the physical and psychological health of the person.
        
             
        
        
        
True. feces, also known as excrement are the product of excretion.
        
             
        
        
        
Matching codon= CGA 
Amino acid = Alanine
        
             
        
        
        
The best statement would be increased eutrophication caused by high levels of nitrogen and phosphorous. Nitrogen and phosphorous are found in fertilizers. These fertilizers are used by farmers in croplands. Excess use of these might lead for the excess amounts to run off to water bodies which may cause eutrophication. Therefore, altering the nitrogen and phosphorous cycles.