Answer:
Factors That Allow Life on Earth to Exist:
Proximity to the Sun allowing liquid water. 
The size and composition of Earth as a Rocky Planet. ...
Stability of Earth's atmosphere and chemical composition. ...
The Magnetosphere. ...
Consistency of temperatures on Earth. ...
Diversity of Life. ...
Earth's moon.
Explanation:
 
        
             
        
        
        
Answer:
Ninety nine percent of the atmosphere is composed of Nitrogen and Oxygen 
 
        
                    
             
        
        
        
Answer:
Any compound/molecule that contains carbon is considered an organic molecule. This is because carbon is considered the basis for all life on earth. Therefore, the answer is organic.
 
        
             
        
        
        
Answer:
Option (1).
Explanation:
Biological membrane mainly composed of lipids and proteins with the small amount of carbohydrate exposed on the outer surface of the membrane. This membrane plays an important role as it separates the cellular environment and facilitate the transport of the selected molecule.
The flippase enzyme is required to transport the molecules from one side of the membrane to the other membrane. Lipids and proteins can undergo lateral motion but at the different rate within the membrane.
Thus, the correct answer is option (1).