Answer:
The purpose of the carbon cycle is to utilize the carbon by the organisms such as plant which uses carbon in the form of carbondioxide for making food. This carbon is stored in the form of glucose. When this food is eaten by the animals, it is broken down into simpler substances and carbondioxode is released in the atmosphere again. 
Some carbon is present in soil which is used by microorganisms such as bacteria. So carbon cycle is very important for the survival of life on earth. 
 
        
             
        
        
        
Answer:
Due to less steps and requires less energy.
Explanation:
The bacterial cell is able to use glucose first as an energy source then switch to lactose because glucose requires less steps and less amount of energy for the break down as compared to lactose. If lactose is the only sugar available to the bacterial cells, then bacterial cells will use it as energy source for the production of energy. In order to use lactose, the bacteria must express the lac operon genes, which encode the main enzymes for lactose uptake and metabolism.
 
        
             
        
        
        
Life and death are complex things. Life is the existence of something and death is the end. They go hand in hand. Without one you cannot have the other. To live means to die and to die means you have lived. 
Hopes this helps. Add a comment if not and I will try to assist.
        
                    
             
        
        
        
Teens diagnosed with schizophrenia experiences LOSS OF GRAY MATTER THAT SPREAD IN WAVES INTO THE EARLY 20S.
Schizophrenia is a group of disorders that is characterized by delusions, hallucinations, cognitive impairment, mood disturbance and social withdrawal. Researchers had noticed that there is a distinct process in the manner in which brain development occurs in normal teens and teens with schizophrenia.<span />