. People who sleep less than 5 hours a night on average are more likely to have calcium deposits in their arteries (Rabin, 2008)

(P), negative correlation (N), or no correlation (X).

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

compass can be used day and night, cloudy or sunny