Answer:
A
Explanation:
Before domestication of animals, these animals were wild and early humans used to hunt for food. The hunting process  was not always successful and took a lot of energy from the body. Domestication of these animals made food available and other conveniences. An example is cows that emanated from the domestication of wild aurochs. They provided the milk and meat for humans and also labored in the farm in the cultivation of domesticated plants. 
 
        
             
        
        
        
The answer is lithosphere.
        
                    
             
        
        
        
Answer:
c. Ribs move out- diaphragm contracts- lungs expand- decrease intrathoracic pressure
Explanation:
 
        
                    
             
        
        
        
Answer:
Allele G represents the strong jaw, and allele g represents the weak jaw. This is because as the generations go by, allele G’s population increases, but allele g’s population decreases. If hard shelled animals are the only foods available to them, you would need a strong jaw to eat them. This means that allele g wouldn’t be able to eat these reptiles, so their population would decrease from lack of food.
Explanation:
 
        
             
        
        
        
Cell is the living blocks of life. They form the structural 
and the functional unit of our life, that is a group of cell 
forms tissue, a group of tissue forms organ, a group of 
organs form organ system and finally a group of organ 
systems form a complete organism / individual.
And there are two types of cell 
1/ eukaryotic cell ( consists of the plant cell and the animal 
cell )
2/ prokaryotic cell (... I don't know man )