No 2 people in the world are "exactly alike", so the odds would be 0% chance.    Twins, might be closer in alike-ness, but they still aren't "exactly alike".   Hope this answered your question.
 
        
             
        
        
        
Answer:
Independent variable: ALTITUDE
dependent variable: GROWTH OF PLANTS 
Confounding variable: STOREYS OF THE BUILDING
Explanation:
In an experiment, the basic components i.e primary variables that an experiment should contain, are the independent and dependent variables. 
- The independent variable is the variable that is changed or manipulated in an experiment. In this experiment, the ALTITUDE of the plant is the independent variable. 
- The dependent variable is the variable that responds to changes to the independent variable. It is the variable measured in an experiment. In this case, the dependent variable is the GROWTH OF THE PLANTS. 
- The confounding variable is a variable that has an extra influence on the outcome of the experiment. In other words, the confounding variable has an impact on the dependent variable. In this case, the confounding variable is the STOREYS OF THE BUILDING.
 
        
             
        
        
        
<span>A(n)PRIMITIVE CHARACTER  is one present in the common ancestor and all members of the group
Primitive character is also known as ancestral character in phylogenetics. It is defined as a characteristic that  has undergone little change since time immemorial and is inherited from a common ancestor of a clad.
</span>
        
             
        
        
        
Answer:
lung cancer. i hope this helps