The answer would be 36, you just fill in what you know and solve the problem.
        
                    
             
        
        
        
It was an asteroid that came to earth two billions years ago and scientists says that there might be another one coming.so we might live in space for a couple of months or years. so that why the dinosaur die.
        
             
        
        
        
B because when ice melts it doesn't stay  in the same form
        
             
        
        
        
Answer:
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.Our body structures are arranged into several different systems, each with its own specific function.