Answer:
Rift Valley
Explanation: 
This happens when the plates pull apart. They don’t collide and are not any form of mountains.
        
             
        
        
        
Answer:
The fundamental law of inheritance. 
Explanation:
He is responsible for our knowing that genes come in pairs and are inherited as units (alleles), one from each parent. 
 
        
                    
             
        
        
        
Answer:
Mudslide
Explanation:
This is an example of a mudslide. Because it is on a mountain and it is sliding down hill that is why it is called a slide and because it is picking up eroded rocks, mud and grass it is called a mudslide. 
 
        
             
        
        
        
The energy-rich compound needed by organism is : Carbohydrates
Carbohydrates consist of the combination of the existing Carbon, Hydrogen, and Oxygen alone.
For human, The source of carbohydrates could be found in almost every food, but the huge amount could be found in rice, potato, corn, cassava, oatmeal, etc
hope this helps