The correct answer is the last option.
The first option (unable to cause climate change) is incorrect because these gases do effect the atmospheric temperatures by increasing them.
The second option is incorrect because while these gases do cause more water vapor to condense, they result in acid rain (not wetter climates). 
        
                    
             
        
        
        
The invention that allowed scientists to study cells for the first time is the Microscope
        
             
        
        
        
Answer:
do an experiment and track the data 
Explanation:
 You can put some foods in a room with ants Then put a different food in a different room with the same amount of ants And see if the ants are attracting to the food