Answer: Air resistance and/or drag.
Explanation: The parachute adds drag to the parachutist, thus making him fall slower and safely to the ground. 
 
        
             
        
        
        
It contains protease which is the enzyme that breaks down protein
        
             
        
        
        
Answer: The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse. If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells.
 
        
             
        
        
        
Answer:
)Give the definition of poverty line as defined by the World Bank.
 
        
             
        
        
        
Answer:
Mass of the steel cube =  7800 kg
Volume of the steel  = 1.025 cubic centimetre
Explanation:
Given:
The density of the steel   =  7.8
Side of the cube = 12 cm
<u>(1)The mass of steel cube :</u>
We know that,

We are given with density and sides of the cube
then volume of the cube 
=  
 
= 
= 1000 cubic centimetre
Now


mass =  7800 kg
<u>(2)volume of steel:</u>
Given the mass  = 8 kg

Substituting the values


volume = 1.025 cubic centimetre