<span>This is true. Extension is the opposite of flexion, they're like antonyms, so hyperextension would be an extension even beyond that, or in this case, it would be in the opposite direction of the flexion of a joint. That is why the answer to this question should be true.</span>
        
                    
             
        
        
        
Hello there,
The answer to your question is <span>Isometric contraction
Hope this helps ^_^
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Coral reefs are built by coral polyps as they secrete layers of calcium carbonate beneath their bodies.  And inside each coral poly lives single-celled algae called zooxanthellae. So basically in simplistic terms, coral polys create coral reefs and algae is in coral polys which also goes into coral reefs when they are made.