Why did you write the last part I don’t get it I’m
        
             
        
        
        
Answer:
B.
Explanation:
Because a Longitudinal wave is a wave vibrating in the direction of propagation.
 
        
                    
             
        
        
        
<span>The correct answer is A. atoms. Atoms are studied by physics and chemistry, not by ecology. Ecology studies organisms, populations, and the earth in terms of climate, pollution prevention, natural habitats and biomes, and all kinds of similar things that are related to living on earth. Atoms are irrelevant for the study of ecology.</span>
        
                    
             
        
        
        
Answer:
Tree frogs use plants as protection. Golden jackals, once they have been expelled from a pack, will trail a tiger to feed on the remains of its kills. Goby fish live on other sea animals, changing color to blend in with the host, thus gaining protection from predators.
Explanation: