Answer:
D
Explanation:
the answer is d..... .... . 
 
        
             
        
        
        
Would be same everywhere !! mechanical energy is always constant !
and it doesn't matter air is present or not....total energy is always constant !
        
             
        
        
        
The answer is; greenhouse effect, insulating 
Examples of greenhouse gases in the atmosphere are carbon dioxide and methane. They trap infrared light spectrum emitted from the earth towards space. This trap acts as heat insulation causing global temperatures to rise and resulting in global warming and climate change. 
 
        
                    
             
        
        
        
Plants use energy from sunlight to turn water and carbon dioxide from what they get into an energy-rich sugar called glucose. This process is called photosynthesis, which means “making things with light”.  In photosynthesis, the energy in light is absorbed by photopigments. 
 
        
             
        
        
        
it has an alternating chemical<span> phosphate and </span>sugar<span> backbone, making the 'sides' of the ladder. (Deoxyribose is the name of the </span>sugar<span> found in the backbone of DNA.) In between the two sides of this </span>sugar<span>-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), </span>cytosine<span> (C), and guanine (G).</span>