Plants stomata allow it to transpire and is also a mechanism used to 'suction' or 'pull' the water through the xylem
        
                    
             
        
        
        
The scientific theory of evolution states that populations change over time in response to changes in the enviroment
        
                    
             
        
        
        
Answer:
Pp or PP
Explanation:
Being heterozygous mean you have one recessive gene(a), one dominate (A). Homozygous dominant means you have only dominate(AA). if you use a Punnett square, it would look like this: 
        P      P
P     PP   PP
p     Pp   Pp
This shows only Pp, and PP are the possible genotypes.
 
        
             
        
        
        
Which simple machine can be described as a rope that is threaded through a wheel or disk?
The correct answer is B - Pulley
A pulley is a simple machine that is used to lift loads. It consists of a wheel on which a rope is placed and the rope is pulled by the person towards himself to lift the load that is tied on the other side of the rope. There are three main types of pulleys: fixed, movable, and compound.
 
        
             
        
        
        
The most appropriate answer would be Biotechnology. Biotechnology has provided the ability to regrow tissue for knee or hip joints.  It uses biological systems that are believed to help the development of products that is reserved for specific use.