<span>Many planets are made of gas, and in different situations, the atmosphere can be destroyed. 
The sun which is burnt measures atmosphere and in the same case planets can be in a good situation on galactic map and a great condition in the atmosphere as well as earth. 
For example, the mass of an object can attract a smaller object causing gravity. The bigger the masses of a planet when it is in the right condition the more atmosphere it can attract if there is any floating on the planet. If it is big it will make a gravitational influence and gather more gases.</span>
        
                    
             
        
        
        
Answer:
White
Immune
Explanation:
White blood cells, also called leukocytes, are one of the cells that are involved in the body's immune system. They protect the body against various infections diseases and other invaders. Leukocytes are produced in the bone marrow (hematopoietic stem cells). They are not the only cells that are important for the defense of the body but are important.
 
        
             
        
        
        
Answer:
a
Explanation:
the kidney secretes an enzyme called rennin that helps to control blood pressure is not true the kidney does not secret rennin