Answer:
For the eggs to survive and have a chance of hatching, sea turtles must lay their eggs on sandy beaches. As they are developing, the embryos breathe air through a membrane in the eggs, and so they cannot survive if they are continuously covered with water.
Explanation:
 
        
             
        
        
        
Its internal mainly because none of the other words fit and because what happens with the rumbling and vomitting its INTERNAL
hope this helped plz mark brainliest if u can
        
                    
             
        
        
        
Answer:
Due to the large number of fossils being discovered at that time Darwin proposed that species change over long periods of time.
Explanation:
The theory of Darwin was that the species change in accordance to their environment, thus they develop advantageous traits so that they can be more competitive.
 
        
             
        
        
        
c. food production is the answer  
 
        
                    
             
        
        
        
I think it is because the cold air is more dense than the hot air so the less dense air which is the warm air rises