Answer:
Explanation:
All Cnidarians have appendages with stinging cells in their tips which are utilized to capture and stifle prey. In truth, the phylum title "Cnidarian" actually implies "stinging animal." The stinging cells are called cnidocytes and contain a structure called a nematocyst. The nematocyst could be a coiled thread-like stinger.
 
        
             
        
        
        
Answer:
Protozoology should be the answer. 
 
        
             
        
        
        
Answer:
Aquatic life quickly suffers the effects of watershed pollution, while new pollutants introduced into ecosystems alter wildlife habitats. This reduces biodiversity by eliminating some species and introducing new, invasive ones that destroy the native species.
Explanation:
 
        
             
        
        
        
According to Bronsted-Lowry acid concept
 an acid is a that donate a proton" and a base is a "proton acceptor."so
  will look for that molecule to which  <span>H2O</span> "donates" H+to become <span>OH−</span>. so answer will be..
. <span>NH3+H2O→NH+4+O<span>H<span>−
so correct option is NH3
hope it helps</span></span></span>
        
                    
             
        
        
        
Answer:
True
Explanation:
Fixation converts nitrogen in the atmosphere into forms that plants can absorb through their root systems. A small amount of nitrogen can be fixed when lightning provides the energy needed for N