Answer: Crude Birth Rate and Crude Death Rate
Explanation: Both indicate the Natural Increase Rate of a country
 
        
             
        
        
        
Answer:
El Niño is a weather pattern that occurs in the Pacific Ocean. During this time, unusual winds cause warm surface water from the equator to move east, toward Central and South America.
Explanation:
 
        
                    
             
        
        
        
Answer:
The relationship between the Aborigines and the Australian government has fluctuated throughout its history. During the British colonial period, Aborigines were persecuted with their land stolen and many of them killed. With little rights, the population dwindled and by the 1900s the natives were a small minority in their own land.
Explanation:
 
        
                    
             
        
        
        
The answer would be the cracking of rock caused by the freezing and thawing of water.