Answer:
They were introduced by humans
Explanation:
I attached a PDF document, just take a part of it that seems to work the best, and put it through a paraphrasing tool so it doesn't get flagged for plagiarism 
 
        
             
        
        
        
Answer:
cytominesis: 4
fragmentation: 5
colony: 3
mitosis: 6 
budding: 2
binary fission:1
multiple fission: 7
Explanation:
I made flashcards in these. they are all correct, trust 
 
        
             
        
        
        
Out Of the following choices given, the best soil for gardening will be a soil that is 10 percent sand, and 80 percent clay. The correct answer will be A. 
        
                    
             
        
        
        
Answer:
The cerebellum.
Explanation: The cerebellum, which is also known as the "little brain", is responsible for motor movement and coordination with those movements.