Answer:plate tectonics
Explanation: Because plate tectonics moved around the continents and they were moved to different locations which caused the climate change 
 
        
             
        
        
        
Answer:
Mitochondrial DNA.
Explanation:
Mitochondria is known as the power house of the cell and one of the important organelle responsible for the production of energy. Mitochondria contains its own DNA.
To understand the maternal ancestor history, the mitochondria DNA  must be studied. The mitochondria is solely obtained from the mother as the egg contains large amount of cytoplasm that contains mitochondria. The mitochondria can never be inherited from paternal origin as the sperm contains few amount of cytoplasm and mitochondria. 
Thus, the answer is mitochondrial DNA. 
 
        
             
        
        
        
1. Turn the water off when washing the dishes. 
2. Turn the sink off when brushing your teeth instead of letting it run
3. Take a 2-5 minute shower (no longer)
4. Do not leave the water running when you use water 
5. Do not fill up a cup of water that you will not drink, pour it in plants or put it in the fridge to stay cold
        
                    
             
        
        
        
FOSSIL FUELS is your answer........