Answer:
The American bison is the national animal of USA..
 
        
                    
             
        
        
        
<h2>-Hello There-</h2><h2 /><h2>The answer to your question "Normal cardiac rhythm is determined by which of the following?" is "SINOATRIAL NODE"</h2><h2 />
        
             
        
        
        
has tremendous biodiversity and high rates of endemic species: of more than 200,000 known species found on Madagascar, more than 80 percent exist nowhere else. Unique to the island are over 100 kinds of lemurs, over 300 species of frogs, and 33 species of tenrecs, miniature hedgehog-like animals. However, it is one of the most threatened ecosystems on the planet.
        
             
        
        
        
The answer to your question is true. 
 
        
             
        
        
        
The first one is gravitational force
since the students already did the experiment and formed a hypothesis through observation, the next best thing is to make a conclusion on what was done.