Hello,
I believe you're asking which option is true. If so, A) do not require a medium. Unlike mechanical waves, electromagnetic (or light) waves do not require a medium. It has been proven that light travels in a straight line. Light waves are, in fact, electromagnetic radiation, and they can travel in a vacuum. 
Faith xoxo
        
                    
             
        
        
        
The planet would be Neptune and Earth's average time is 365.2 days aka a full year (1 year).
        
             
        
        
        
Answer: In all of these carrying capacity would go down substantially.
 Explanation: This is because these natural disasters are very detrimental to the environments and would decrease life.
        
             
        
        
        
1.
the Changes of the Human Bodies
2. Shapes Different Careers
3. Provides Answers to Large-scale Problems
4. Teaches Concepts on Basic Living
5. Helps in Answering the Fundamental Questions About Life
6. Have another for (good luck) Paves Way for Scientific Investigations