<span> 1.) Collect cheek cells. 2.) Burst cells open to release </span>DNA<span>. 3.) Separate </span>DNA<span> from proteins. and debris. </span>4<span>.) Isolate concentrated .</span>
        
             
        
        
        
Carbon dioxide is normally slightly warmer than oxygen so if there is a sudden increase, it would naturally increase the temperature. 
 
        
             
        
        
        
Answer:
A pure culture consists of only one type of microbe while a  mixed culture has two or more than two microbes.
Explanation:
A pure culture consists of only one type of microbe. 
While a mixed culture consists of more than one type of microbes. such cultures may comprise of different species of bacteria or a group of bacteria, viruses and other pathogens. 
In mixed culture the microbe species living together may harm each other existence. 
 
        
             
        
        
        
Answer:
Repetition
 the act of repeating, or doing, saying, or writing something again; repeated action, performance, production, or presentation. repeated utterance; reiteration. something made by or resulting from repeating.
Replication
duplicate, repeat replicate a statistical experiment replicated his mentor's writing style. intransitive verb. 
Empirical evidence is the information received by means of the senses, particularly by observation and documentation of patterns and behavior through experimentation. The term comes from the Greek word for experience,
I hope it helps