<span>"That these little creatures survive in these small pools of water" is the whole noun clause You could replace that whole noun clause with "That fact" which is a noun phrase and have a sentence That fact is amazing where "that fact" would be the subject.
Likewise, </span>this whole noun clause represents A SUBJECT of the sentence because it corresponds with the predicate "is".
        
             
        
        
        
સારું પ્રથમ તમારે મારી ભાષા મૂંગું મૂર્ખ સમજવું જોઈએ
 
        
             
        
        
        
sorry Jenn Jenny bb too which arroz aww wee all keen Uno's