Adjustment knobs are used to focus light in a light microscope
        
             
        
        
        
I would tell ypu but the scientists told me to
        
                    
             
        
        
        
Answer:
a
Explanation:
called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution. He believed that Pangaea was intact until the late Carboniferous period, about 300 million years ago, when it began to break up and drift apart.
 
        
             
        
        
        
Answer: The role of water in metamorphism is determined by the independent variables rock pressure, temperature, water pressure, and the amount of water present.
Explanation: