Radiation: is the emission or transmission of energy in the form of waves or particles through space or through a material medium.
Examples: Radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation
        
             
        
        
        
Answer: During the Cambrian Explosion of Animal Life
 
        
             
        
        
        
It is am example of a COMPOUND
        
                    
             
        
        
        
False. They form a V formation so that it will lower their heart rate and make it easier to go longer distances. And when they are in a V formation, it results in wind resistance. 
        
             
        
        
        
The answer is B. hope you get it