Answer:
1: 7.8 cm
2: .7 cm
3: 5.55 cm
For the other questions, you have to use a ruler yourself and measure using cm. :) 
1 cm = 10 millimeter. To convert, just add a 0 to the end of cm to find the mm (or move the decimal one place to the right.) 
For example, 2.6 cm = 26 mm / 5 cm = 50 mm. Hope this helps!
 
        
             
        
        
        
Be there for them and let them know they're not alone.
        
             
        
        
        
Answer:
Gel electrophoresis is a technique used to separate DNA fragments according to their size. DNA samples are loaded into wells indentations at one end of a gel, and an electric current is applied to pull them through the gel. DNA fragments are negatively charged, so they move towards the positive electrode. Really easy
Explanation:
 
        
             
        
        
        
Internal fertilization protects<span> the </span>fertilized egg<span> or embryo from predation and harsh environments</span>
        
                    
             
        
        
        
Answer:
 In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
Explanation: i think this is right