Answer: i answered the first one you posted go check 
Explanation:
 
        
             
        
        
        
Yes because as the population of Herons decrease, the population of frogs increase because there is less herons to eat the frogs. If the population of
        
             
        
        
        
Answer: 
D. four haploid cells
Explanation:
When meiosis is complete,four haploid cells are formed from a single diploid cell. The four daughter cells produced that contains half the number of chromosome than that of their parent cell. Due to meiosis the number of chromosomes remain fixed in a species from generation to generation.
The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells.
 
        
                    
             
        
        
        
The answer is B.
It doesn’t really make sense and isn’t something an enzyme does. Enzymes help chemical reactions occur. They don’t alter the intrinsic energy of a particular substrate.
        
                    
             
        
        
        
Trees and flowers I might be wrong i don’t know let me know if I’m right