A ballad poem is <span>a poem or song narrating a story in short stanzas. It is a </span>popular narrative song passed down orally. In the English tradition, it usually follows a form of rhymed (abcb) quatrains<span> alternating four-stress and three-stress lines. Folk (or traditional) ballads are anonymous and recount tragic, comic, or heroic stories with emphasis on a central dramatic event.
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ANSWER: <span>a long, melodious poem that narrates a story</span>
        
             
        
        
        
Anatomy is the study of human body parts, while physiology is the study of the functions of said body part. So anatomy is what the body part is, and physiology is what that body part does.
        
                    
             
        
        
        
Answer:
Explanation:Raymond Dasmann was the first person who used the term Biological diversity in 1968. He was a wildlife scientist and conservationist. But this term gain attraction in the scientific community in the 1980s.
So during 1980s the scientific community and activists were concerned about the extinction of biodiversity so this topic gain attraction as a research subject among the scientific community.
The issue of biodiversity was first published in 1987 in journal Conservation Biology which soon popularized the concept of biodiversity and became the main journal for publication of scientific research on biodiversity. 
Therefore through publication, the term biodiversity appeared which gain attraction in the scientific community, society and in politics.
 
        
             
        
        
        
Platelets would help the blood clot, therefore preventing blood loss. White Blood Cells would help protect against infection. So, I believe the answer would be platelets & white blood cells.