The food that we eat give us the energy that we have in our bodies. That energy can help us in out everyday lives . 
        
             
        
        
        
Phylum is a principal taxonomic category that is ranked below the kingdom and above the class. If two organisms are in the same phylum, this means that they are also in the same kingdom. Each phylum is composed of one or more classes. 
        
                    
             
        
        
        
Cerebrum is in the most anterior part of our brain, fronting of the skull. It functions in sensory and neural processes. Cerebellum is found at the back of the skull. It functions in coordination, balance and muscular activity. Medulla oblongata connects from the spinal cord which controls heart and lungs. Pons is part of the brainstem which controls breathing and communication.
        
                    
             
        
        
        
Nuclear envelope is the answer
        
                    
             
        
        
        
1 Only
Archaea are single celled organisms that lack a nucleus and are the most basic life forms on Earth. A common way of killing MOST bacteria is extreme heat so the answer to this is 1 only. There are not many bacteria that can survive extreme conditions.