Answer: I believe this answer is ''thin atmosphere.''
Explanation:  With a thin atmosphere the temperatures can regulate quite a bit so it can't sustain it's own temperature for very long BECAUSE it has a thin atmosphere....
 
        
                    
             
        
        
        
Answer:
Energy from the sun (solar) will not be used to light up the oceans, if there is no sunlight, no solar energy would be present. Good day. This was in my own words. 
 
        
                    
             
        
        
        
Vascular tissue
Of course plants don't have hearts, but they do have vessels which transport water, minerals, and nutrients through the plant. These vessels are the vascular tissue.