Answer:
What they do
Explanation: People put goldfish in lakes and creeks and ponds they invade the area and eat everything there and the animals that are there they take all the recorses that the other speices need 
 
        
             
        
        
        
I would have to say predation.
        
             
        
        
        
Answer:
The correct answer would be "Photosynthesis produces oxygen, while cellular respiration produces carbon dioxide"
Photosynthesis refers to the process by which plants make their food (sugars or glucose) from carbon dioxide and water with the help of sunlight and chlorophyll.
It takes place in chloroplast of the cell. Oxygen is released as the byproduct of the process.
The whole reaction can be summarized as:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
In contrast, cellular respiration refers to the set of chemical reactions which take place in the cell in order to convert the chemical energy of the food (sugar) into ATP.
Carbon dioxide is released as the byproduct.
The whole reaction can be summarized as 
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O 
 
        
                    
             
        
        
        
They help frog maintain homeostasis
        
                    
             
        
        
        
I believe it's RNA. But double check that please.