First, he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then, he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance A is a catalyst.
        
                    
             
        
        
        
Answer:
The correct answer is - option 3.
Explanation:
The given options are the question are affects the protection of the ecological system in one or another manner but the mandating the rights of government sale of the logging rights in a national forest must be a proper and fair market value.
This will lead to a decrease in the illegal sale of logging sale which results in maintaining the ecological system in the national forest.
Thus, the correct answer is - option 3.
 
        
             
        
        
        
Well you can give them stuff that they want but that always don't work,so u can be nice to them or ask them what is wrong with them hope this helps :))))))(
        
                    
             
        
        
        
It’s the remains of a dead organism
        
                    
             
        
        
        
Mitochondria, plastids and chloroplast all are surrounded by a double membrane