The answer is C. Mice are mammals so they need to feed on their mother's milk to survive for a few months. After a while, there mother teaches them how to hunt for food. The other animals like frogs, turtles, and snakes leave their babies to fend for themselves.
        
                    
             
        
        
        
The cramps can be caused due to anaerobic respiration in the muscles and lactic acid formation. 
During intense physical activity the muscles become deprived of oxygen, in this condition, anaerobic respiration takes place in the muscle cells causes the formation of the lactic acid. 
The physical training increases the strength of the muscles, which can help the muscles not to get tired easily. that is why, physical training is required before any marathon. 
 
        
                    
             
        
        
        
Explanation:
A change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
 
        
             
        
        
        
Answer:
An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. 
Explanation: 
Some examples of organelles are endoplasmic reticula, Golgi apparatus, lysosomes, vacuoles, mitochondria, plastids, and nucleus.