Any substance that triggers an immune response is an antigen(s).
        
                    
             
        
        
        
they should because they are improving the stock market
        
             
        
        
        
B
A convergent boundary is an earth where two or more lithospheric plates collide
        
             
        
        
        
Without sunlight plants can undergo photsynthesis and cannot produce oxygen for humans to breathe and would cause the humankind to go extinct.
        
                    
             
        
        
        
Answer:
The Sun, just like the Moon and the Earth, also has its own gravity which can affect the tides. Although the Sun is much larger than the Moon and has more gravity, it's also much further away, meaning its pull on the tides is less than half as strong as the Moon's. It still does have an effect, though. 
So I think its B
Explanation: