Genes are found on DNA, which make(s) up the chromosomes, found in nucleus. 
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If pressure less so volume increases and if temperature increase so volume also increases 
        
                    
             
        
        
        
As you go up in an ecosystem the bigger animals have less energy. While the organisms down at the bottom like plants that create their own energy have greater amounts. This is because energy is rated doing everyday things. As energy travels up the food pyramid, it looses more and more energy. This is knower as the 10% rule. In which every time you go up 10% of energy is lost.
        
             
        
        
        
The correct answer is 'If molecules are small enough, then they can pass through the semipermeable membrane because they can cross the semipermeable membrane from their small pores or openings'.
The semipermeable membrane is permeable to few molecules, and the smaller molecules pass through the molecules from small pores present in the semipermeable membrane. The size of the big molecules are large, so, they cannot cross through semipermeable membrane. 
 
        
                    
             
        
        
        
Uranium is not a renewable resource.
Hope this Helps!!!