Hello.
M*Cp*(T’-Tf)=MCp(T'-T)
M*= Mass of Water. ; M= Mass of ice.
Cp*= Specific heat of water
Cp= Specific heat of ice
T= Temp. Of Ice
T'= Temp. of water
Tf= Equilibrium Temp.
Have  a nice day
 
        
        
        
Meiosis is invovled in the production of gametos (sex cells) so that the plant can reproduce. This usually happens during the time the plant is flowering
        
             
        
        
        
<h3><u>Benefits of smooth stem  over rough stem:</u></h3>
Smooth stem plants like guava, eucalyptus etc do have a smooth layer of bark over its stem that comes out as a skin when they shed their barks. Whereas most of the other plants like mango, banyan etc do have a rough corrugated layer of bark over their stem. 
The smooth stem doesn’t let water to accumulate in the bark which can led to infections to the tree. It also doesn’t allow any seed to settle on bark that can led to growth of parasites. Thereby this smooth bark saves the trees from some of the probable harm to the tree.  
 
        
        
        
Answer:
selective permeability
Explanation:
The property or characteristic of cellular membrane to allow certain substances to pass through the cell is known as selective permeability. The movement of molecules and ions across the cell can be active or passive.
 
        
             
        
        
        
The exposure of certain types of radiation