Answer:
The Urinary bladder, the ureter, and the urethra are all organs that belong in the execratory system. 
The heart and spinal chord are not organs in the execratory system. The spinal chord belongs to the nervous system and the heart belongs to the circulatory. 
 
        
             
        
        
        
The correct answer should be the endocrine system.
Hormones are secreted by endocrine glands in endocrine systems. Opposite of this would be the exocrine system consisting of exocrine glands.
        
                    
             
        
        
        
Animals release carbon dioxide (CO2) into the atmosphere through the process of respiration.
 
        
             
        
        
        
The answer is Marine Sediments or Sediments. Lithogenous is
a sediments derived from preexisting rocks on land, it is also a type of marine
sediment that forms thickest deposits worldwide, and it is sediment that begins
as rocks on continents or island. An example of lithogenous sediment is
sandstone.