The answer is Eukaryotes.
        
             
        
        
        
Answer:
Niche can be described as the role or position that a particular organism has in its ecosystem.
For example, honeybees which will gather nectar from flowers to make honey is an example of a niche. The particular role of honeybees in an ecosystem is to collect nectar in that ecosystem from different flowers and to produce honey. Other organisms living in the same environment will not perform the same function in the ecosystem. 
 
        
             
        
        
        
It penetrates the skin and can cause mutations.
        
             
        
        
        
Answer:
Simply put your hand out and block them and put them back in the corner in a sit position. make sure that you let your dog know that not moving is what gets them. The reward gradually increase the distance and time as we did in the corner until they can stay for 10 seconds at 10 feet away. 
Also, with a leash, when teaching your dog to stay, say "stay" and pull the leash back to when the dog is sitting. This gives the dog an understanding of what to do and how to do it. Repeat this a few times. Then the dog will learn to sit and stay before the leash stops. Then they will have learned the "Stay" command. 
Hope this Helps!
 
        
                    
             
        
        
        
Answer:A herbivorous duck
Explanation:A primary consumer is an organism that eats producers. Primary consumers are always herbivores.