A. True 
Aldosterone stimulates the Na+/K+ pump in renal tubules to exchange Na+ (sodium) for K+ (potassium). This, using ATP energy for active transport, leads to reabsorption of sodium into the bloodstream and secretion of potassium into the urine.
        
             
        
        
        
Answer:
The heart pumps blood through the lungs. In the lungs the blood receives oxygen and releases carbon dioxide. Then the heart pumps this oxygen-rich blood from the lungs to your cells. When the oxygen-rich blood gets to the cells, the cells receive the oxygen and release the carbon dioxide.
The cells in our bodies need oxygen to stay alive. Carbon dioxide is made in our bodies as cells do their jobs. The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out.
Explanation:
Hopefully this helps :)
 
        
             
        
        
        
Answer: 
The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
Explanation:
 
        
             
        
        
        
The answer on this scenario would be that most of the people would rely on external brains these days in order to connect to people.Hope this would be the answer on this question and would surely be of help then.