they might conserve water
 
        
             
        
        
        
Composite volcanoes. Had this question on apex:)
 
        
             
        
        
        
Answer:
Productivity is refers to the rate of generation of biomass in an ecosystem. The difference between net and gross productivity is that gross productivity is    is the overall rate of energy capture while net productivity is  is lower, adjusted for energy used by organisms in respiration/metabolism. 
Explanation:
 
        
             
        
        
        
Answer: from 30% sucrose solution to the 40% sucrose solution
Explanation:
From the definition of osmosis is the movement of water molecules through a selectively permeable membrane from a region of lower solute into a region of higher solute concentration, until the solute concentrations on the two sides is equal. 
Therefore the net movement of water molecules will move from 30% sucrose solution to the 40% sucrose solution until the concentration of sucrose on both sides of the impermeable membrane is equal 35% each.