The answer is D) the organ system.
        
                    
             
        
        
        
<span>Safety precautions:
- Use gloves of the proper material
- Use safety goggles
- Lab coat that 
- Know where the safety equipment is located</span>
Lab apparatus:
A mass balance
100ml beaker 
 
        
             
        
        
        
Answer:
sexual reproduction, because the genetic material comes from both parents.
Explanation:
The sperm and egg produced contain different combination of genes
 
        
             
        
        
        
Answer:
3.
Explanation:
A classroom desktop is the least likely to grow bacteria because it is a relatively clean surface. The armpit of a human and a warm freshwater mud puddle are a more suitable habitat for bacteria because they are warm, and provide a relatively safe environment for them
 
        
             
        
        
        
Answer:
It could lead to the changes in the earths surface because it could open up geysers in the crater, causing the earths surface to change.