Answer:
a mutation that causes female pigs to have less offspring
Explanation:
 
        
                    
             
        
        
        
Answer:
no
Explanation:
no, make sure you say thank you to me for helping
 
        
             
        
        
        
The increase of carbon dioxide in the atmosphere creates a greenhouse effect. 
To explain this usually some sunlight is reflected back into space while some is absorbed by the earth keeping the planet warm. However the increase in greenhouse gases such as carbon dioxide prevent the light from reflecting back into space and this light becomes trapped causing the earth to heat more then it should. You can almost think of the trapped heat from the greenhouse gases as a blanket around the earth trapping the heat in.
        
             
        
        
        
The right answer is C. I think, a. and d. are obviously not serious. B is not true, because Ag and Au are in the same group in the periodic table and therefore have the same number of electrons in the last level. So, they form ions with the same charge. C is true beacause Ag and Au have different numbers in the periodic table and different amount of protons and neutrons in their nucleuses.